我创建了Alert对话框，当我点击按钮时它没有显示。它崩溃的应用程序。我的代码如下。我的代码有什么问题？请帮助我!!
backBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
TestHopeQueue.this);
// set title
alertDialogBuilder.setTitle("Remove Download");
// set dialog message
alertDialogBuilder
.setMessage("Click yes to exit!")
.setCancelable(false)
.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
for (int k = 0; k < trlist.size(); k++) {
if (trlist.get(k) != null) {
View v13 = linearlayout
.getChildAt(k);
TextProgressBar pr = (TextProgressBar) v13
.findViewById(R.id.progressBar);
if (pr.getProgress() < 100) {
trlist.get(k).interrupt();
trlist.set(k, null);
ViewVideoDelete(k);
Button btnDownButton = (Button) v13
.findViewById(R.id.btnDownload);
btnDownButton
.setVisibility(View.VISIBLE);
pr.setProgress(0);
pr.invalidate();
pr.setText("" + 0 + "%");
Button btnDelete = (Button) v13
.findViewById(R.id.btnDelete);
btnDelete
.setVisibility(View.GONE);
downloadqueuelist.remove(0);
if (k % 2 == 0) {
v13.setBackgroundColor(Color
.parseColor("#f8f8ff"));
// convertView.setBackgroundResource(R.drawable.whitebackground);
} else {
v13.setBackgroundColor(Color
.parseColor("#DCDCDC"));
// convertView.setBackgroundResource(R.drawable.greybackground);
}
}
} else {
TestHopeQueue.this.finish();
}
}
}
})
.setNegativeButton("No",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
// if this button is clicked, just close
// the dialog box and do nothing
dialog.cancel();
}
});
//alertDialog.show();
for (int k = 0; k < trlist.size(); k++) {
if (trlist.get(k)!= null) {
Log.v("log_tag"," Alert Dialog ");
break;
} else {
TestHopeQueue.this.finish();
}
}
AlertDialog alertDialog = new AlertDialog.Builder(TestHopeQueue.this).create();
//AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
});
我在下面得到错误::
04-13 12:38:58.112: E/WindowManager(576): Activity com.example.testhopequeue.TestHopeQueue has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@40585268 that was originally added here
04-13 12:38:58.112: E/WindowManager(576): android.view.WindowLeaked: Activity com.example.testhopequeue.TestHopeQueue has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@40585268 that was originally added here
04-13 12:38:58.112: E/WindowManager(576): at android.view.ViewRoot.<init>(ViewRoot.java:258)
04-13 12:38:58.112: E/WindowManager(576): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
04-13 12:38:58.112: E/WindowManager(576): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
04-13 12:38:58.112: E/WindowManager(576): at android.view.Window$LocalWindowManager.addView(Window.java:424)
04-13 12:38:58.112: E/WindowManager(576): at android.app.Dialog.show(Dialog.java:241)
04-13 12:38:58.112: E/WindowManager(576): at com.example.testhopequeue.TestHopeQueue$1.onClick(TestHopeQueue.java:180)
04-13 12:38:58.112: E/WindowManager(576): at android.view.View.performClick(View.java:2485)
04-13 12:38:58.112: E/WindowManager(576): at android.view.View$PerformClick.run(View.java:9080)
04-13 12:38:58.112: E/WindowManager(576): at android.os.Handler.handleCallback(Handler.java:587)
04-13 12:38:58.112: E/WindowManager(576): at android.os.Handler.dispatchMessage(Handler.java:92)
04-13 12:38:58.112: E/WindowManager(576): at android.os.Looper.loop(Looper.java:130)
04-13 12:38:58.112: E/WindowManager(576): at android.app.ActivityThread.main(ActivityThread.java:3683)
04-13 12:38:58.112: E/WindowManager(576): at java.lang.reflect.Method.invokeNative(Native Method)
04-13 12:38:58.112: E/WindowManager(576): at java.lang.reflect.Method.invoke(Method.java:507)
04-13 12:38:58.112: E/WindowManager(576): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-13 12:38:58.112: E/WindowManager(576): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-13 12:38:58.112: E/WindowManager(576): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：0)
我在您的代码中发现您在其他部分中通过TestHopeQueue.this.finish();完成了您的活动，然后尝试在已完成的活动中显示警告对话框。
因此，您收到此错误消息。
答案 1 :(得分：0)
您可以直接在点击按钮上调用此方法。
backBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AlertBoxShow();
}
// AlertBoxShow() method definition here
public void AlertBoxShow(){
AlertDialog.Builder alt_bld = new AlertDialog.Builder(this);
alt_bld.setMessage("Do you want to close this application ?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
finish();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// Action for 'NO' Button
dialog.cancel();
}
});
AlertDialog alert = alt_bld.create();
// Title for AlertDialog
alert.setTitle("AlertDialogExample");
// Icon for AlertDialog
alert.setIcon(R.drawable.ic_launcher);
alert.show();
}
}
答案 2 :(得分：0)
同时你正在执行按钮1的两个动作onclick，显示dailog 2）你正在完成你的活动的内部循环，在显示导致错误的对话之前完成你的活动。
答案 3 :(得分：0)
Try This Using This Code You Get Alert Dialog..
==================================main Activity.java
package com.example.sample;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
Button b1;
final Context context = this;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1 = (Button) findViewById(R.id.b1);
b1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
ShowDialog();
}
});
}
public void ShowDialog()
{
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
context);
// set title
alertDialogBuilder.setTitle("Your Title");
// set dialog message
alertDialogBuilder
.setMessage("Click yes to exit!")
.setCancelable(false)
.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
// if this button is clicked, close
// current activity
MainActivity.this.finish();
}
})
.setNegativeButton("No",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
// if this button is clicked, just close
// the dialog box and do nothing
dialog.cancel();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
}
}