Java 按下按钮并从3到0计数
按钮后退计数并激活按钮,按下按钮将打开新活动…Java 按下按钮并从3到0计数,java,android,android-button,counting,click-counting,Java,Android,Android Button,Counting,Click Counting,按钮后退计数并激活按钮,按下按钮将打开新活动… 我正在尝试为我的应用程序添加新内容,那么这可能吗?(我需要显示填隙添加及其用于使按钮等待计数。) 方法A 用户单击一个按钮 按钮计数3。2.1.0 按钮激活 (然后单击按钮并打开下一步/新活动等) 方法B 用户打开应用程序/OnCreate启动 按钮计数3。2.1.0 按钮激活 (…单击按钮并打开下一步/新活动等) 哪种代码或方法可以做到这一点,请帮助。谢谢:)请尝试此代码,在结束时,您只需将意图传递给下一个活动,并在第二个活动中粘贴此代码,效果会
我正在尝试为我的应用程序添加新内容,那么这可能吗?(我需要显示填隙添加及其用于使按钮等待计数。) 方法A
(然后单击按钮并打开下一步/新活动等)
哪种代码或方法可以做到这一点,请帮助。谢谢:)请尝试此代码,在结束时,您只需将意图传递给下一个活动,并在第二个活动中粘贴此代码,效果会更好
import android.app.Activity;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class Sample extends Activity {
// Declare a variable to hold count down timer's paused status
private boolean isPaused = false;
// Declare a variable to hold count down timer's paused status
private boolean isCanceled = false;
// Declare a variable to hold CountDownTimer remaining time
private long timeRemaining = 0;
CountDownTimer timer;
long millisInFuture = 4000; // 30 seconds
long countDownInterval = 1000; // 1 second
TextView tView;
Button btnStart;
Button btnPause;
Button btnResume;
Button btnCancel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Get reference of the XML layout's widgets
tView = (TextView) findViewById(R.id.tv);
btnStart = (Button) findViewById(R.id.btn_start);
// Set a Click Listener for start button
btnStart.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
timercall();
// Disable the start and pause button
btnStart.setEnabled(false);
// Initialize a new CountDownTimer instance
}
});
// Set a Click Listener for pause button
// Set a Click Listener for resume button
}
private void timercall() {
// TODO Auto-generated method stub
btnStart.setEnabled(false);
timer = new CountDownTimer(millisInFuture, countDownInterval) {
public void onTick(long millisUntilFinished) {
// do something in every tick
if (isPaused || isCanceled) {
// If the user request to cancel or paused the
// CountDownTimer we will cancel the current
// instance
cancel();
} else {
// Display the remaining seconds to app interface
// 1 second = 1000 milliseconds
tView.setText("" + millisUntilFinished / 1000);
// Put count down timer remaining time in a variable
timeRemaining = millisUntilFinished;
}
}
public void onFinish() {
// Do something when count down finished
tView.setText("Activated");
btnStart.setText("Active");
btnStart.setEnabled(true);
btnStart.setClickable(true);
// Enable the start button
btnStart.setEnabled(true);
// Disable the pause, resume and cancel button
btnStart.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), "next page",
Toast.LENGTH_SHORT).show();
}
});
}
}.start();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
// getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
// noinspection SimplifiableIfStatement
/*
* if (id == R.id.action_settings) { return true; }
*/
return super.onOptionsItemSelected(item);
}
}
//activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:padding="16dp"
tools:context=".MainActivity" >
<TextView
android:id="@+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="CountDownTimer will display here..."
android:textColor="#000000" />
<Button
android:id="@+id/btn_start"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/tv"
android:text="Start" />
</RelativeLayout>
您是否试图设置按钮上显示的超时,以强制用户查看间隙?非常感谢您HsRaja:)我会尝试它工作得很好真的谢谢