Android 带有添加按钮的动态视图，如何查找唯一的edtxt ID或其他任何内容
我正在构建一个android应用程序，在其中创建动态Android 带有添加按钮的动态视图，如何查找唯一的edtxt ID或其他任何内容,android,dynamic,view,addtextchangedlistener,Android,Dynamic,View,Addtextchangedlistener,我正在构建一个android应用程序，在其中创建动态EditText视图。我需要在顶部TextView上显示所有EditText的总和。我找不到办法，谁能帮我一下吗 我也不明白，当我点击“添加”按钮时，只有一个动态视图似乎处于活动状态，其余视图似乎处于休眠状态……（这只是我程序的一部分） 先谢谢你 这是我的XML <LinearLayout android:id="@+id/linearBelowBoard" android:orientation="vertical"
EditTextTextViewEditText<LinearLayout
android:id="@+id/linearBelowBoard"
android:orientation="vertical"
android:layout_below="@+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</LinearLayout>
<Button
android:text="Add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button2"
android:layout_below="@+id/totalText"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="111dp"
android:layout_marginStart="111dp" />
<TextView
android:text="Sum"
android:textStyle="bold"
android:textSize="40dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/totalText"
android:layout_alignParentTop="true"
android:layout_alignRight="@+id/button2"
android:layout_alignEnd="@+id/button2" />
使用以下代码解决您的问题：我对您的代码做了一些更改，请尝试使用以下代码：
package com.cj.myapplication;
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
* Created by CHETAN JOSHI on 3/6/2017.
*/
public class MainActivity extends AppCompatActivity {
EditText edt1;
Button but_add, but_remove;
TextView txtSum;
LinearLayout linearBelowBoard;
int e1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
linearBelowBoard = (LinearLayout) findViewById(R.id.linearBelowBoard);
txtSum = (TextView) findViewById(R.id.totalText);
but_add = (Button) findViewById(R.id.button2);
but_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
LayoutInflater layoutInflater =
(LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View addView = layoutInflater.inflate(R.layout.row, null);
edt1 = (EditText) addView.findViewById(R.id.editText);
edt1.addTextChangedListener(new MyTextWatcher(edt1));
Button but_remove = (Button) addView.findViewById(R.id.button);
final View.OnClickListener thisListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
((LinearLayout) addView.getParent()).removeView(addView);
}
};
but_remove.setOnClickListener(thisListener);
linearBelowBoard.addView(addView);
}
});
}
private class MyTextWatcher implements TextWatcher {
EditText mEditText = null;
public MyTextWatcher(EditText mEditText) {
this.mEditText = mEditText;
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
calCheck(mEditText);
}
}
public void calCheck(EditText editText) {
try {
if (linearBelowBoard != null) {
e1 =0;
for (int i = 0; i < linearBelowBoard.getChildCount(); i++) {
LinearLayout linearLayout = (LinearLayout)linearBelowBoard.getChildAt(i);
RelativeLayout relativeLayout = (RelativeLayout)linearLayout.getChildAt(0);
View view = relativeLayout.getChildAt(0);
EditText editText1 = null;
if (view instanceof EditText) {
editText1 = (EditText) view;
} else {
view = relativeLayout.getChildAt(1);
editText1 = (EditText) view;
}
String str = editText1.getText().toString();
if(str!=null && !str.equals("") && str.length()>0)
e1 = e1 + Integer.parseInt(editText1.getText().toString());
}
}
txtSum.setText("" + String.valueOf(e1));
} catch (Exception e) {
e.printStackTrace();
}
}
}
private EditText getEditTextFromPosition(int position){
EditText editText=null;
LinearLayout linearLayout = (LinearLayout)linearBelowBoard.getChildAt(position);
RelativeLayout relativeLayout = (RelativeLayout)linearLayout.getChildAt(0);
View view = relativeLayout.getChildAt(0);
if (view instanceof EditText) {
editText = (EditText) view;
} else {
view = relativeLayout.getChildAt(1);
editText = (EditText) view;
}
return editText;
}
很好的一个tnx为它。。但我想添加所有editText文件。。。txtSum.setText（“+String.valueOf（e1））；需要在那里做些什么……？是的，我知道等一下，我会用这个更新我的代码。Chetan你能指出为什么我的代码不能保持所有edittxt的活动状态吗？不，你的代码所有EditText都是活动的，但你知道哪一个在移动中是活动的，但是在我的代码中，我创建了一个seprate类MyTextWatcher，它实现了TextWatcher并添加了构造函数init。所以每次我都知道EditText关注的是哪一个。嗨，Chetan，如果你能告诉我如何从txtSum获取文本，那就太好了，我尝试了你的概念，但因为你的代码在里面，所以我无法获取每个文本更改的文本，我需要在我的程序中进行进一步的操作，谢谢
package com.cj.myapplication;
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
* Created by CHETAN JOSHI on 3/6/2017.
*/
public class MainActivity extends AppCompatActivity {
EditText edt1;
Button but_add, but_remove;
TextView txtSum;
LinearLayout linearBelowBoard;
int e1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
linearBelowBoard = (LinearLayout) findViewById(R.id.linearBelowBoard);
txtSum = (TextView) findViewById(R.id.totalText);
but_add = (Button) findViewById(R.id.button2);
but_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
LayoutInflater layoutInflater =
(LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View addView = layoutInflater.inflate(R.layout.row, null);
edt1 = (EditText) addView.findViewById(R.id.editText);
edt1.addTextChangedListener(new MyTextWatcher(edt1));
Button but_remove = (Button) addView.findViewById(R.id.button);
final View.OnClickListener thisListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
((LinearLayout) addView.getParent()).removeView(addView);
}
};
but_remove.setOnClickListener(thisListener);
linearBelowBoard.addView(addView);
}
});
}
private class MyTextWatcher implements TextWatcher {
EditText mEditText = null;
public MyTextWatcher(EditText mEditText) {
this.mEditText = mEditText;
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
calCheck(mEditText);
}
}
public void calCheck(EditText editText) {
try {
if (linearBelowBoard != null) {
e1 =0;
for (int i = 0; i < linearBelowBoard.getChildCount(); i++) {
LinearLayout linearLayout = (LinearLayout)linearBelowBoard.getChildAt(i);
RelativeLayout relativeLayout = (RelativeLayout)linearLayout.getChildAt(0);
View view = relativeLayout.getChildAt(0);
EditText editText1 = null;
if (view instanceof EditText) {
editText1 = (EditText) view;
} else {
view = relativeLayout.getChildAt(1);
editText1 = (EditText) view;
}
String str = editText1.getText().toString();
if(str!=null && !str.equals("") && str.length()>0)
e1 = e1 + Integer.parseInt(editText1.getText().toString());
}
}
txtSum.setText("" + String.valueOf(e1));
} catch (Exception e) {
e.printStackTrace();
}
}
}
public void calCheck(EditText editText) {
try {
if (linearBelowBoard != null) {
e1 = 0;
for (int i = 0; i < linearBelowBoard.getChildCount(); i++) {
EditText editText1 = getEditTextFromPosition(i);
String str = editText1.getText().toString();
if (str != null && !str.equals("") && str.length() > 0)
e1 = e1 + Integer.parseInt(editText1.getText().toString());
}
}
txtSum.setText("" + String.valueOf(e1));
} catch (Exception e) {
e.printStackTrace();
}
}
private EditText getEditTextFromPosition(int position){
EditText editText=null;
LinearLayout linearLayout = (LinearLayout)linearBelowBoard.getChildAt(position);
RelativeLayout relativeLayout = (RelativeLayout)linearLayout.getChildAt(0);
View view = relativeLayout.getChildAt(0);
if (view instanceof EditText) {
editText = (EditText) view;
} else {
view = relativeLayout.getChildAt(1);
editText = (EditText) view;
}
return editText;
}