Java 安卓：连续[一个接一个]点击一到六个按钮，将不同的结果串在一起
我决定开发一款Android应用程序，它使用的技术与我以前见过的应用程序非常相似。我想将多个按钮组合在一起，以等同于不同的文本结果 我正在制作的这款本地盲文应用程序有6个不同的按钮，我希望每一个独特的组合都能为我带来不同的字母。例如：我想点击按钮1，给我简单的字母“A”。然后连续点击按钮1和按钮2，我会看到字母“C”。我希望这6个按钮的每一个不同的按钮组合给我带来一封单独的信 能否请精通Java的人解释一下这是如何做到的？我如何在多个按钮按下时串入字符串以获得不同的结果？谢谢你的帮助 我的java代码：Java 安卓：连续[一个接一个]点击一到六个按钮，将不同的结果串在一起,java,android,eclipse,function,switch-statement,Java,Android,Eclipse,Function,Switch Statement,我决定开发一款Android应用程序，它使用的技术与我以前见过的应用程序非常相似。我想将多个按钮组合在一起，以等同于不同的文本结果 我正在制作的这款本地盲文应用程序有6个不同的按钮，我希望每一个独特的组合都能为我带来不同的字母。例如：我想点击按钮1，给我简单的字母“A”。然后连续点击按钮1和按钮2，我会看到字母“C”。我希望这6个按钮的每一个不同的按钮组合给我带来一封单独的信 能否请精通Java的人解释一下这是如何做到的？我如何在多个按钮按下时串入字符串以获得不同的结果？谢谢你的帮助 我的j
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.keyboard);
Window window = this.getWindow();
window.addFlags(LayoutParams.FLAG_DISMISS_KEYGUARD);
window.addFlags(LayoutParams.FLAG_SHOW_WHEN_LOCKED);
window.addFlags(LayoutParams.FLAG_TURN_SCREEN_ON);
// Init GUI
txtMessage = (EditText) findViewById(R.id.txtMesssage);
Button buttonOne = (Button) findViewById(R.id.block1);
Button buttonTwo = (Button) findViewById(R.id.block2);
Button buttonThree = (Button) findViewById(R.id.block3);
Button buttonFour = (Button) findViewById(R.id.block4);
Button buttonFive = (Button) findViewById(R.id.block5);
Button buttonSix = (Button) findViewById(R.id.block6);
// Attached Click Listener
btnSend.setOnClickListener(this);
buttonOne.setOnClickListener(this);
buttonTwo.setOnClickListener(this);
buttonThree.setOnClickListener(this);
buttonFour.setOnClickListener(this);
buttonFive.setOnClickListener(this);
buttonSix.setOnClickListener(this);
}
@Override
public void onClick(View v) {
}
switch (v.getId()) {
case R.id.block1:
break;
case R.id.block2:
break;
case R.id.block3:
break;
case R.id.block4:
break;
case R.id.block5:
break;
case R.id.block6:
break;
}
txtMessage.setText();
}
//functions below.
.... ....
... ...
.. ..
. O .
.. ..
... ...
.... ....
在我的XML布局
keyboard.XML上
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@color/lightgrey">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="@+id/txtMesssage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:hint="Enter Message"
android:textColor="@color/darkbrown" >
</EditText>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:orientation="horizontal" >
<Button
android:id="@+id/block1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:layout_weight="1.0"
android:text="Button one" />
<Button
android:id="@+id/block2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="@color/blue"
android:text="Button two" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:orientation="horizontal" >
<Button
android:id="@+id/block3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="@color/bg_gradient_end"
android:text="Button three" />
<Button
android:id="@+id/block4"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="@color/darkgrey"
android:text="Button four" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:orientation="horizontal" >
<Button
android:id="@+id/block5"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="@color/lightgrey"
android:text="Button five" />
<Button
android:id="@+id/block6"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="@color/bg_gradient_start"
android:text="Button six" />
</LinearLayout>
这是正确的吗？我不太会写java，所以我只能给你伪代码，但我会给你指出正确的方向
要完成此任务，您只需做三件事：
1.收集你的输入数据（点击按钮），你几乎已经完成了。
2.知道什么时候该处理输入。
3.将输入处理为正确的输出
收集您的输入。
此时，您希望将这些压力机存储在一个id数组中，不需要切换。几次按下后，您应该有一个输入数组
输入[R.id.block1、R.id.block2、R.id.block2]
知道什么时候该处理。
在按钮按下处理程序中，添加一个倒计时计时器。每次按下按钮，取消计时器并启动一个新的计时器
Timer processTimer = new Timer().schedule(new TimerTask() {
public void run() { processInput(); }
}, 500); // Delay before processing.
processTimer.cancel();
processtimer.schedule(new TimerTask() {
public void run() { processInput(); }
}, 500);
调用processInput（）时，您知道用户已停止按按钮
处理输入。
为您的成果创建关键/价值对
map = {[R.id.block1],'A',
[R.id.block1, R.id.block2],'B',
[R.id.block1, R.id.block2, R.id.block2],'C',
etc...
}
搜索用户的输入并获取您的值
这基本上就是它的全部。好吧，我已经试过了，我相信这将帮助您走上您正在尝试的道路，因为我目前了解您的需求。我对这门课的评论、我在做什么以及为什么要这样做都非常冗长。我希望这是有益的，而不是像迎合。听起来你可能对Java和Android相当陌生，我觉得补充的解释可能有用
我确信有一些边缘案例和bug已经被遗漏，但这应该是一个好的开始
Android活动类--MainActivity.java
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;
import java.util.Queue;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
/**
* TAG is typically used for the Log class if you want to see debug/error information in logcat
*/
public static final String TAG = MainActivity.class.getSimpleName();
/**
* Constant to delay before attempting to resolve button presses to an input
*/
public static final int INPUT_HANDLE_DELAY_MS = 500;
/**
* Buttons have naming convention button<column><row>
*/
private Button mButton00;
private Button mButton10;
private Button mButton01;
private Button mButton11;
private Button mButton02;
private Button mButton12;
/**
* Where we are going to store the input generated by button presses
*/
private EditText mEditText;
/**
* Where the lookup based on ids is going to happen and convert it to a character
*/
private static Map<String, String> mLookupMap;
/**
* I am not 100% sure if this is needed, but because we will be attempting to write to the mInputQueue,
* and read from it, i've created a lock
*/
private static final Object mLock = new Object();
/**
* Where we are going to store the input generated by button presses
*/
private Queue<Integer> mInputQueue= new LinkedList<>();
/**
* Android Handler class to help with the timer, and executing our runnable to handle the
* button resolution
*/
private Handler mHandler = new Handler();
/**
* Runnable to cause the application to check if there is valid input
*/
private Runnable mHandleInputRunnable;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.buttons);
// method call to initialize the lookup map
initializeLookup();
// Obtain all the references from the layout that we are going to need to use
mEditText = (EditText) findViewById(R.id.edit_text);
mButton00 = (Button) findViewById(R.id.button_0_0);
mButton10 = (Button) findViewById(R.id.button_1_0);
mButton01 = (Button) findViewById(R.id.button_0_1);
mButton11 = (Button) findViewById(R.id.button_1_1);
mButton02 = (Button) findViewById(R.id.button_0_2);
mButton12 = (Button) findViewById(R.id.button_1_2);
// above, the activity implements the OnClickListener interface, set the activity to handle
// the clicks of all of the buttons
mButton00.setOnClickListener(this);
mButton10.setOnClickListener(this);
mButton01.setOnClickListener(this);
mButton11.setOnClickListener(this);
mButton02.setOnClickListener(this);
mButton12.setOnClickListener(this);
// initialize the Runnable to do what we need it to do when we get a 'tick'
mHandleInputRunnable = new Runnable() {
@Override
public void run() {
handleAlarmTrigger();
}
};
}
@Override
public void onClick(View v) {
if (null != mInputQueue) {
synchronized (mLock) {
mInputQueue.add(v.getId());
}
}
resetHandler();
}
/**
* Helper method to do the initialization of the map. Sorry about the order for the button
* presses. They are a little sporadic, no real rhyme or reason.
*/
private void initializeLookup() {
if (null != mLookupMap) {
return;
}
mLookupMap = new HashMap<>();
/*
1 button characters, use String.valueOf() instead of buildStringFromIds() as there is only
one id
*/
mLookupMap.put(String.valueOf(R.id.button_0_0), "A");
mLookupMap.put(String.valueOf(R.id.button_1_0), "B");
mLookupMap.put(String.valueOf(R.id.button_0_1), "C");
mLookupMap.put(String.valueOf(R.id.button_1_1), "D");
mLookupMap.put(String.valueOf(R.id.button_0_2), "E");
mLookupMap.put(String.valueOf(R.id.button_1_2), "F");
/*
2 button characters
*/
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_0), "G");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_1), "H");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_1), "I");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_2), "J");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_2), "K");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_0), "L");
/*
3 button characters
*/
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_0, R.id.button_0_1), "M");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_1, R.id.button_0_2), "N");
mLookupMap.put(buildStringFromIds(R.id.button_1_0, R.id.button_1_1, R.id.button_1_2), "O");
mLookupMap.put(buildStringFromIds(R.id.button_1_0, R.id.button_0_1, R.id.button_1_2), "P");
mLookupMap.put(buildStringFromIds(R.id.button_1_2, R.id.button_1_2, R.id.button_0_1), "Q");
mLookupMap.put(buildStringFromIds(R.id.button_1_2, R.id.button_1_2, R.id.button_0_1), "R");
/*
4 button characters
*/
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_0, R.id.button_0_0, R.id.button_0_0), "S");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_0, R.id.button_0_1, R.id.button_1_0), "T");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_1, R.id.button_0_2, R.id.button_0_1), "U");
mLookupMap.put(buildStringFromIds(R.id.button_1_0, R.id.button_1_1, R.id.button_1_2, R.id.button_1_1), "V");
mLookupMap.put(buildStringFromIds(R.id.button_1_0, R.id.button_0_1, R.id.button_1_2, R.id.button_0_2), "W");
mLookupMap.put(buildStringFromIds(R.id.button_1_2, R.id.button_1_2, R.id.button_0_1, R.id.button_1_2), "X");
/*
5 button characters
*/
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_0, R.id.button_0_0, R.id.button_0_0, R.id.button_0_0), "Y");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_0, R.id.button_0_1, R.id.button_1_0, R.id.button_1_1), "Z");
}
/**
* Helper method to poll all of the values out of the queue, and create a key. This may or may
* not be a valid key into the map. It depends on the button presses.
*
* @param queue the input queue where we store the id correlating to the button that was pressed
* @return String representing a key into the map
*/
private String buildStringFromQueue(Queue<Integer> queue) {
StringBuilder sb = new StringBuilder();
if (null != queue) {
Integer pollValue;
synchronized (mLock) {
while ((pollValue = queue.poll()) != null) {
sb.append(pollValue);
}
}
}
return sb.toString();
}
/**
* Helper method to turn 1 to many R.id.button* into a string for a key as a lookup for a character
* value
*
* The "..." means that the method can accept 1 or more values of the defined type
*
* @param ids 1 or more ids
* @return String representing the ids as key into the map
*/
private String buildStringFromIds(int... ids) {
StringBuilder sb = new StringBuilder();
for (int id : ids) {
sb.append(id);
}
return sb.toString();
}
/**
* Helper method that is called each time there is a button click to either start or re-start
* the time before resolving input
*/
private void resetHandler() {
// null checks for the values we will be operating on
if (null != mHandler && null != mHandleInputRunnable) {
/**
* remove the current runnable the handler may/may not have set, and reset it with the
* delay. This is essentially resetting the time before the app takes the button press
* and tries to do a lookup in the map.
*/
mHandler.removeCallbacks(mHandleInputRunnable);
mHandler.postDelayed(mHandleInputRunnable, INPUT_HANDLE_DELAY_MS);
}
}
/**
* Helper method that is called from the Runnable to attempt to handle the input
*/
private void handleAlarmTrigger() {
// just to be safe, always check the queue for null, and don't handle if empty. Also
// we will be setting values on the EditText, ensure it is non-null as well
if (null != mEditText &&
null != mInputQueue &&
!mInputQueue.isEmpty()) {
// Obtain the key from the input we have stored. This will provide a look up into the
// map
String mapKey = buildStringFromQueue(mInputQueue);
// only try and append this if it was a valid set of button presses, and the map
// actually has a value
if (null != mapKey &&
!mapKey.isEmpty() &&
mLookupMap.containsKey(mapKey)) {
mEditText.append(mLookupMap.get(mapKey));
}
// remove all stored values from the queue so we may restart the button presses
synchronized (mLock) {
mInputQueue.clear();
}
}
}
}
导入android.os.Bundle；
导入android.os.Handler；
导入android.support.v7.app.AppActivity；
导入android.view.view；
导入android.widget.Button；
导入android.widget.EditText；
导入java.util.HashMap；
导入java.util.LinkedList；
导入java.util.Map；
导入java.util.Queue；
公共类MainActivity扩展AppCompatActivity实现View.OnClickListener{
/**
*如果希望在logcat中查看调试/错误信息，则标记通常用于日志类
*/
公共静态最终字符串标记=MainActivity.class.getSimpleName（）；
/**
*尝试将按钮按下解析为输入之前的延迟常量
*/
公共静态最终整数输入\u句柄\u延迟\u MS=500；
/**
*按钮具有命名约定按钮
*/
私人按钮mButton00；
专用按钮mButton10；
私人按钮mButton01；
专用按钮mButton11；
专用按钮mButton02；
专用按钮mButton12；
/**
*我们将在其中存储由按钮按下生成的输入
*/
私有EditText-mEditText；
/**
*其中将发生基于ID的查找，并将其转换为字符
*/
私有静态映射mLookupMap；
/**
*我不能100%确定是否需要这样做，但因为我们将尝试写入mInputQueue，
*从中读取，我创建了一个锁
*/
私有静态最终对象mLock=新对象（）；
/**
*我们将在其中存储由按钮按下生成的输入
*/
private Queue mInputQueue=new LinkedList（）；
/**
*Android处理程序类来帮助计时器，并执行我们的runnable来处理
*按钮分辨率
*/
私有处理程序mHandler=新处理程序（）；
/**
*Runnable使应用程序检查是否存在有效输入
*/
私有可运行的mhandleinputrunable；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（右布局按钮）；
//方法调用以初始化查找映射
初始化lookup（）；
//从布局中获取我们需要使用的所有参考
mEditText=（EditText）findViewById（R.id.edit_text）；
mButton00=（按钮）findViewById（R.id.Button\u 0\u 0）；
mButton10=（按钮）findViewById（R.id.Button\u 1\u 0）；
mButton01=（按钮）findViewById（R.id.Button\u 0\u 1）；
mButton11=（按钮）findViewById（R.id.Button\u 1\u 1）；
mButton02=（按钮）findViewById（R.id.Button\u 0\u 2）；
mButton12=（按钮）findViewById（R.id.Button\u 1\u 2）；
//在上面，活动实现OnClickListener接口，将活动设置为handle
//所有按钮的点击
mButton00.setOnClickListener（此）；
mButton10.setOnClickListener（此）；
mButton01.setOnClickListener（此）；
mButton11.setOnClickListener（此）；
mButton02.setOnClickListener（此）；
mButton12.setOnClickListener（此）；
//初始化Runnable，以便在得到“勾号”时执行我们需要它执行的操作
mhandleinputrunable=newrunnable（）{
@凌驾
公开募捐{
手拉式起重器（）；
}
};
}
@凌驾
公共void onClick（视图v）{
if（null！=mInputQueue）{
已同步（mLock）{
add（v.getId（））；
}
}
resetHandler（）；
}
/**
*帮助器方法来初始化映射。很抱歉按钮的顺序
*印刷品。它们有点零散，没有真正的韵律或理由。
*/
private void initializeLookup（）{
我
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;
import java.util.Queue;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
/**
* TAG is typically used for the Log class if you want to see debug/error information in logcat
*/
public static final String TAG = MainActivity.class.getSimpleName();
/**
* Constant to delay before attempting to resolve button presses to an input
*/
public static final int INPUT_HANDLE_DELAY_MS = 500;
/**
* Buttons have naming convention button<column><row>
*/
private Button mButton00;
private Button mButton10;
private Button mButton01;
private Button mButton11;
private Button mButton02;
private Button mButton12;
/**
* Where we are going to store the input generated by button presses
*/
private EditText mEditText;
/**
* Where the lookup based on ids is going to happen and convert it to a character
*/
private static Map<String, String> mLookupMap;
/**
* I am not 100% sure if this is needed, but because we will be attempting to write to the mInputQueue,
* and read from it, i've created a lock
*/
private static final Object mLock = new Object();
/**
* Where we are going to store the input generated by button presses
*/
private Queue<Integer> mInputQueue= new LinkedList<>();
/**
* Android Handler class to help with the timer, and executing our runnable to handle the
* button resolution
*/
private Handler mHandler = new Handler();
/**
* Runnable to cause the application to check if there is valid input
*/
private Runnable mHandleInputRunnable;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.buttons);
// method call to initialize the lookup map
initializeLookup();
// Obtain all the references from the layout that we are going to need to use
mEditText = (EditText) findViewById(R.id.edit_text);
mButton00 = (Button) findViewById(R.id.button_0_0);
mButton10 = (Button) findViewById(R.id.button_1_0);
mButton01 = (Button) findViewById(R.id.button_0_1);
mButton11 = (Button) findViewById(R.id.button_1_1);
mButton02 = (Button) findViewById(R.id.button_0_2);
mButton12 = (Button) findViewById(R.id.button_1_2);
// above, the activity implements the OnClickListener interface, set the activity to handle
// the clicks of all of the buttons
mButton00.setOnClickListener(this);
mButton10.setOnClickListener(this);
mButton01.setOnClickListener(this);
mButton11.setOnClickListener(this);
mButton02.setOnClickListener(this);
mButton12.setOnClickListener(this);
// initialize the Runnable to do what we need it to do when we get a 'tick'
mHandleInputRunnable = new Runnable() {
@Override
public void run() {
handleAlarmTrigger();
}
};
}
@Override
public void onClick(View v) {
if (null != mInputQueue) {
synchronized (mLock) {
mInputQueue.add(v.getId());
}
}
resetHandler();
}
/**
* Helper method to do the initialization of the map. Sorry about the order for the button
* presses. They are a little sporadic, no real rhyme or reason.
*/
private void initializeLookup() {
if (null != mLookupMap) {
return;
}
mLookupMap = new HashMap<>();
/*
1 button characters, use String.valueOf() instead of buildStringFromIds() as there is only
one id
*/
mLookupMap.put(String.valueOf(R.id.button_0_0), "A");
mLookupMap.put(String.valueOf(R.id.button_1_0), "B");
mLookupMap.put(String.valueOf(R.id.button_0_1), "C");
mLookupMap.put(String.valueOf(R.id.button_1_1), "D");
mLookupMap.put(String.valueOf(R.id.button_0_2), "E");
mLookupMap.put(String.valueOf(R.id.button_1_2), "F");
/*
2 button characters
*/
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_0), "G");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_1), "H");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_1), "I");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_2), "J");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_2), "K");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_0), "L");
/*
3 button characters
*/
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_0, R.id.button_0_1), "M");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_1, R.id.button_0_2), "N");
mLookupMap.put(buildStringFromIds(R.id.button_1_0, R.id.button_1_1, R.id.button_1_2), "O");
mLookupMap.put(buildStringFromIds(R.id.button_1_0, R.id.button_0_1, R.id.button_1_2), "P");
mLookupMap.put(buildStringFromIds(R.id.button_1_2, R.id.button_1_2, R.id.button_0_1), "Q");
mLookupMap.put(buildStringFromIds(R.id.button_1_2, R.id.button_1_2, R.id.button_0_1), "R");
/*
4 button characters
*/
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_0, R.id.button_0_0, R.id.button_0_0), "S");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_0, R.id.button_0_1, R.id.button_1_0), "T");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_1, R.id.button_0_2, R.id.button_0_1), "U");
mLookupMap.put(buildStringFromIds(R.id.button_1_0, R.id.button_1_1, R.id.button_1_2, R.id.button_1_1), "V");
mLookupMap.put(buildStringFromIds(R.id.button_1_0, R.id.button_0_1, R.id.button_1_2, R.id.button_0_2), "W");
mLookupMap.put(buildStringFromIds(R.id.button_1_2, R.id.button_1_2, R.id.button_0_1, R.id.button_1_2), "X");
/*
5 button characters
*/
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_0_0, R.id.button_0_0, R.id.button_0_0, R.id.button_0_0), "Y");
mLookupMap.put(buildStringFromIds(R.id.button_0_0, R.id.button_1_0, R.id.button_0_1, R.id.button_1_0, R.id.button_1_1), "Z");
}
/**
* Helper method to poll all of the values out of the queue, and create a key. This may or may
* not be a valid key into the map. It depends on the button presses.
*
* @param queue the input queue where we store the id correlating to the button that was pressed
* @return String representing a key into the map
*/
private String buildStringFromQueue(Queue<Integer> queue) {
StringBuilder sb = new StringBuilder();
if (null != queue) {
Integer pollValue;
synchronized (mLock) {
while ((pollValue = queue.poll()) != null) {
sb.append(pollValue);
}
}
}
return sb.toString();
}
/**
* Helper method to turn 1 to many R.id.button* into a string for a key as a lookup for a character
* value
*
* The "..." means that the method can accept 1 or more values of the defined type
*
* @param ids 1 or more ids
* @return String representing the ids as key into the map
*/
private String buildStringFromIds(int... ids) {
StringBuilder sb = new StringBuilder();
for (int id : ids) {
sb.append(id);
}
return sb.toString();
}
/**
* Helper method that is called each time there is a button click to either start or re-start
* the time before resolving input
*/
private void resetHandler() {
// null checks for the values we will be operating on
if (null != mHandler && null != mHandleInputRunnable) {
/**
* remove the current runnable the handler may/may not have set, and reset it with the
* delay. This is essentially resetting the time before the app takes the button press
* and tries to do a lookup in the map.
*/
mHandler.removeCallbacks(mHandleInputRunnable);
mHandler.postDelayed(mHandleInputRunnable, INPUT_HANDLE_DELAY_MS);
}
}
/**
* Helper method that is called from the Runnable to attempt to handle the input
*/
private void handleAlarmTrigger() {
// just to be safe, always check the queue for null, and don't handle if empty. Also
// we will be setting values on the EditText, ensure it is non-null as well
if (null != mEditText &&
null != mInputQueue &&
!mInputQueue.isEmpty()) {
// Obtain the key from the input we have stored. This will provide a look up into the
// map
String mapKey = buildStringFromQueue(mInputQueue);
// only try and append this if it was a valid set of button presses, and the map
// actually has a value
if (null != mapKey &&
!mapKey.isEmpty() &&
mLookupMap.containsKey(mapKey)) {
mEditText.append(mLookupMap.get(mapKey));
}
// remove all stored values from the queue so we may restart the button presses
synchronized (mLock) {
mInputQueue.clear();
}
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText android:id="@+id/edit_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<GridLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:columnCount="2"
android:rowCount="3">
<Button android:id="@+id/button_0_0"
android:layout_column="0"
android:layout_row="0"
android:layout_gravity="fill"
android:layout_columnWeight=".5"
android:layout_rowWeight=".5"
android:background="@android:color/holo_red_dark"/>
<Button android:id="@+id/button_1_0"
android:layout_column="1"
android:layout_row="0"
android:layout_gravity="fill"
android:layout_columnWeight=".5"
android:layout_rowWeight=".5"
android:background="@android:color/holo_blue_bright"/>
<Button android:id="@+id/button_0_1"
android:layout_column="0"
android:layout_row="1"
android:layout_gravity="fill"
android:layout_columnWeight=".5"
android:layout_rowWeight=".5"
android:background="@android:color/holo_green_dark"/>
<Button android:id="@+id/button_1_1"
android:layout_column="1"
android:layout_row="1"
android:layout_gravity="fill"
android:layout_columnWeight=".5"
android:layout_rowWeight=".5"
android:background="@android:color/holo_orange_dark"/>
<Button android:id="@+id/button_0_2"
android:layout_column="0"
android:layout_row="2"
android:layout_gravity="fill"
android:layout_columnWeight=".5"
android:layout_rowWeight=".5"
android:background="@android:color/holo_purple"/>
<Button android:id="@+id/button_1_2"
android:layout_column="1"
android:layout_row="2"
android:layout_gravity="fill"
android:layout_columnWeight=".5"
android:layout_rowWeight=".5"
android:background="@android:color/darker_gray"/>
</GridLayout>
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
static long DELAY_TIME_INPUT = 500;
static int INPUT_TYPE_NORMAL = 0;
static int INPUT_TYPE_CAP = 1;
static int INPUT_TYPE_NUM = 2;
TextView txtMessage;
int[] mAlphabetTable1 = new int[]{1, 3, 9, 25, 17, 11, 27, 19, 10, 26,
5, 7, 13, 29, 21, 15, 31, 23, 14, 30,
37, 39, 58, 45, 61, 53};
int[] mSymbolTable1 = new int[]{2, 6, 4, 18, 36, 40, 50, 22, 38, 52, 54, 12};
/* Note: The value used below {8, 16, 20, 24} are just an example.
I choose these values because they are not defined on the above tables.
*/
int[] mSpecialTable1 = new int[]{8, 16, 20, 24};
// char[] mAlphabetTable2 = new char[]{};
char[] mNumberTable2 = new char[]{'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'};
char[] mSymbolTable2 = new char[]{',', ';', '\'', ':','-', '.', '.', '!', '“', '”','(','/'};
int mCurrentAlphabet = 0;
int mCurrentInputType = 0;
long mLastTimeStamp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Window window = this.getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
// Init GUI
txtMessage = (TextView) findViewById(R.id.txtMesssage);
Button buttonOne = (Button) findViewById(R.id.block1);
Button buttonTwo = (Button) findViewById(R.id.block2);
Button buttonThree = (Button) findViewById(R.id.block3);
Button buttonFour = (Button) findViewById(R.id.block4);
Button buttonFive = (Button) findViewById(R.id.block5);
Button buttonSix = (Button) findViewById(R.id.block6);
// Attached Click Listener
buttonOne.setOnClickListener(this);
buttonTwo.setOnClickListener(this);
buttonThree.setOnClickListener(this);
buttonFour.setOnClickListener(this);
buttonFive.setOnClickListener(this);
buttonSix.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.block1: mCurrentAlphabet |=1; break;
case R.id.block2: mCurrentAlphabet |=2; break;
case R.id.block3: mCurrentAlphabet |=4; break;
case R.id.block4: mCurrentAlphabet |=8; break;
case R.id.block5: mCurrentAlphabet |=16; break;
case R.id.block6: mCurrentAlphabet |=32; break;
}
view.setBackgroundColor(Color.BLACK);
Button btView = (Button) view;
btView.setTextColor(Color.WHITE);
mLastTimeStamp = System.currentTimeMillis();
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
long currentTimeStamp = System.currentTimeMillis();
if(currentTimeStamp - mLastTimeStamp > DELAY_TIME_INPUT){
genNewBrailleAlphabet();
}
}
}, DELAY_TIME_INPUT + 10);
}
public void genNewBrailleAlphabet(){
if(mCurrentAlphabet == 32 || mCurrentAlphabet == 60){ // Check if input is Cap or Num sign?
if(mCurrentAlphabet == 32){ // Input is Cap sign.
mCurrentInputType = INPUT_TYPE_CAP;
TextView txtCap = (TextView) findViewById(R.id.cap);
txtCap.setBackgroundColor(Color.GREEN);
} else { // Input is Num sign.
TextView txtNum = (TextView) findViewById(R.id.num);
if(mCurrentInputType == INPUT_TYPE_NUM){
mCurrentInputType = INPUT_TYPE_NORMAL; // Turn off Num sign.
txtNum.setBackgroundColor(Color.TRANSPARENT);
} else {
mCurrentInputType = INPUT_TYPE_NUM; // Turn on Num sign.
txtNum.setBackgroundColor(Color.GREEN);
}
}
} else { // Input is not Cap or Num sign.
byte currentAlphabetIndex = -1;
char newAlphabet = 0;
for (int i = 0; i < mAlphabetTable1.length; i++) {
if (mAlphabetTable1[i] == mCurrentAlphabet) {
currentAlphabetIndex = (byte) i;
break;
}
}
if(currentAlphabetIndex != -1) { // Check if input is Numbers or Alphabets?
if (mCurrentInputType == INPUT_TYPE_NUM) { // Input is Numbers.
if(currentAlphabetIndex < 10) {
newAlphabet = mNumberTable2[currentAlphabetIndex];
}
} else if (mCurrentInputType == INPUT_TYPE_CAP) // Input is Alphabets.
newAlphabet = (char) (currentAlphabetIndex + 'A');
else newAlphabet = (char) (currentAlphabetIndex + 'a');
String msg = txtMessage.getText().toString() + newAlphabet;
txtMessage.setText(msg);
} else { // Input is not Numbers or Alphabets.
for (int i = 0; i < mSymbolTable1.length; i++) {
if (mSymbolTable1[i] == mCurrentAlphabet) {
currentAlphabetIndex = (byte) i;
break;
}
}
if(currentAlphabetIndex != -1) { // Check if input is Punctuations?
newAlphabet = mSymbolTable2[currentAlphabetIndex];
if(currentAlphabetIndex == 8){ // Open Quote, Question Mark have the same pattern.
String tmpString = txtMessage.getText().toString();
if(tmpString.length() > 0 && !tmpString.endsWith(" ")){
// Last typed alphabet is not space, so this is Question Mark.
newAlphabet = '?';
}
}
String msg = txtMessage.getText().toString() + newAlphabet;
txtMessage.setText(msg);
} else { // Input is not Punctuations, so it is Special Action or undefined.
for (int i = 0; i < mSpecialTable1.length; i++) {
if (mSpecialTable1[i] == mCurrentAlphabet) {
currentAlphabetIndex = (byte) i;
break;
}
}
if(currentAlphabetIndex != -1) { // Check if input is Special Action?
String msg = txtMessage.getText().toString();
// Input is Special Action
switch (currentAlphabetIndex) {
case 0: // Change focus here
// Change focus code
/* if (txtNumber.hasFocus()) {
txtMessage.requestFocus();
} else {
txtNumber.requestFocus();
} */
break;
case 1: // BackSpace
msg = msg.substring(0, msg.length() - 1);
txtMessage.setText(msg);
break;
case 2: // Space
msg = msg + " ";
txtMessage.setText(msg);
break;
case 3: // New Line
msg = msg + "\n";
break;
}
txtMessage.setText(msg);
} else { // Input not defined.
Toast.makeText(getApplicationContext(), "Clicked button combination not defined!!", Toast.LENGTH_SHORT).show();
}
}
}
if(mCurrentInputType == INPUT_TYPE_CAP){
TextView txtCap = (TextView) findViewById(R.id.cap);
txtCap.setBackgroundColor(Color.TRANSPARENT);
mCurrentInputType = INPUT_TYPE_NORMAL;
}
}
// Reset button views ana variable for next alphabet.
Button buttonOne = (Button) findViewById(R.id.block1);
Button buttonTwo = (Button) findViewById(R.id.block2);
Button buttonThree = (Button) findViewById(R.id.block3);
Button buttonFour = (Button) findViewById(R.id.block4);
Button buttonFive = (Button) findViewById(R.id.block5);
Button buttonSix = (Button) findViewById(R.id.block6);
buttonOne.setBackgroundColor(Color.WHITE);
buttonTwo.setBackgroundColor(Color.WHITE);
buttonThree.setBackgroundColor(Color.WHITE);
buttonFour.setBackgroundColor(Color.WHITE);
buttonFive.setBackgroundColor(Color.WHITE);
buttonSix.setBackgroundColor(Color.WHITE);
buttonOne.setTextColor(Color.BLACK);
buttonTwo.setTextColor(Color.BLACK);
buttonThree.setTextColor(Color.BLACK);
buttonFour.setTextColor(Color.BLACK);
buttonFive.setTextColor(Color.BLACK);
buttonSix.setTextColor(Color.BLACK);
mCurrentAlphabet = 0;
}}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ScrollView
android:layout_weight="4.0"
android:background="@color/lightgrey"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/txtMesssage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:textColor="@color/darkbrown" >
</TextView>
</LinearLayout>
</ScrollView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:orientation="horizontal"
android:baselineAligned="false"
android:layout_marginTop="15dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="#000000"
android:orientation="vertical" >
<TextView
android:text="CAP"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/cap"
android:layout_weight="1.3"
android:gravity="center"
android:textSize="20sp" />
<Button
android:id="@+id/block1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="#ffffff"
android:text="Button one" />
<Button
android:id="@+id/block2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="#ffffff"
android:text="Button two" />
<Button
android:id="@+id/block3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="#ffffff"
android:text="Button three" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:orientation="vertical"
android:background="#000000">
<TextView
android:text="Num"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/num"
android:layout_weight="1.3"
android:gravity="center"
android:textSize="20sp" />
<Button
android:id="@+id/block4"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="#ffffff"
android:text="Button four" />
<Button
android:id="@+id/block5"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="#ffffff"
android:text="Button five" />
<Button
android:id="@+id/block6"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:background="#ffffff"
android:text="Button six" />
</LinearLayout>
</LinearLayout>