我正在创建一个自定义对话框，用于录制录音机。在对话框中，有3个按钮，当我为这些按钮设置onclicklistener时，它显示强制关闭。
eveAdAudio.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mdialog = new Dialog(event_details.this);
mdialog.setContentView(R.layout.recorder_dialog);
final ViewHolder holder = new ViewHolder();
mdialog.setTitle("Events...");
holder.startRecord = (Button) mdialog.findViewById(R.id.startRecordBtn);
holder.stopRecord = (Button) mdialog.findViewById(R.id.stopRecordBtn);
holder.saveRecord = (Button) mdialog.findViewById(R.id.saveRecordbtn);
holder.showRecord = (TextView) mdialog.findViewById(R.id.recordShowText);
holder.nameRecord = (EditText) mdialog.findViewById(R.id.editAudioName);
holder.nameRecord.setText("myAudioFile");
holder.startRecord.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
p=1;
holder.startRecord.setEnabled(false);
holder.stopRecord.setEnabled(true);
holder.showRecord.setVisibility(View.VISIBLE);
anim = new AlphaAnimation(0.0f, 1.0f);
anim.setDuration(800); //You can manage the time of the blink with this parameter
anim.setStartOffset(20);
anim.setRepeatMode(Animation.REVERSE);
anim.setRepeatCount(Animation.INFINITE);
holder.showRecord.startAnimation(anim);
try {
startRecording();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
holder.stopRecord.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
p=2;
holder.startRecord.setEnabled(true);
holder.saveRecord.setEnabled(true);
holder.stopRecord.setEnabled(false);
holder.showRecord.clearAnimation();
holder.showRecord.setVisibility(View.INVISIBLE);
try {
//stopRecording();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
holder.nameRecord.setEnabled(true);
}
});
holder.saveRecord.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
audioFileName = holder.nameRecord.getText().toString()+".mp4";
p=3;
mdialog.dismiss();
}
});
mdialog.show();
}
});
这是观察者类
private class ViewHolder{
Button startRecord;
Button stopRecord;
Button saveRecord;
TextView showRecord;
EditText nameRecord;
}
starRecording和stopRecording函数ae给出如下。
public void startRecording() throws IOException{
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
audiofile =getFilename(audFolder);//path of file;
recorder.setOutputFile(audiofile);
recorder.setOnErrorListener(errorListener);
recorder.setOnInfoListener(infoListener);
try {
recorder.prepare();
recorder.start();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void stopRecording() throws Exception
{
if(null != recorder){
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
}
}
自定义对话框的布局如下：
<?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="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp"
>
<ImageView
android:id="@+id/imageView1"
android:layout_width="60dp"
android:layout_height="60dp"
android:src="@drawable/voice" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center"
android:layout_gravity="center"
>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" AuFriDis\nVoice Recorder"
android:textSize="15dp"
android:typeface="serif"
android:textStyle="bold|italic"
android:layout_marginRight="15dp"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center"
android:layout_gravity="center"
>
<TextView
android:id="@+id/recordShowText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Recording..."
android:textColor="#ffffff"
android:textStyle="bold|italic"
android:textSize="15dp"
android:visibility="invisible"/>
<EditText
android:id="@+id/editAudioName"
android:layout_width="150dp"
android:layout_height="40dp"
android:ems="10"
android:visibility="invisible">
</EditText>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="10dp"
android:gravity="center">
<Button
android:id="@+id/startRecordBtn"
android:layout_width="70dp"
android:layout_height="40dp"
android:textColor="#ff0000"
android:background="@drawable/item_background"
android:text="Start"
android:layout_marginRight="4dp"/>
<Button
android:id="@+id/stopRecordBtn"
android:layout_width="70dp"
android:layout_height="40dp"
android:textColor="#0066ff"
android:background="@drawable/item_background"
android:text="Stop"
android:layout_marginRight="4dp"
android:enabled="false"/>
<Button
android:id="@+id/saveRecordbtn"
android:layout_width="70dp"
android:layout_height="40dp"
android:textColor="#ffffff"
android:background="@drawable/item_background"
android:text="Save"
android:enabled="false"/>
</LinearLayout>
</LinearLayout>
错误行如下：
10-20 22:23:39.155: E/AndroidRuntime(1528): FATAL EXCEPTION: main
10-20 22:23:39.155: E/AndroidRuntime(1528): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.view.ViewRoot.setView(ViewRoot.java:509)
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.app.Dialog.show(Dialog.java:241)
10-20 22:23:39.155: E/AndroidRuntime(1528): at MainPRJ.Diary.event_details$6.onClick(event_details.java:353)
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.view.View.performClick(View.java:2408)
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.view.View$PerformClick.run(View.java:8816)
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.os.Handler.handleCallback(Handler.java:587)
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.os.Handler.dispatchMessage(Handler.java:92)
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.os.Looper.loop(Looper.java:123)
10-20 22:23:39.155: E/AndroidRuntime(1528): at android.app.ActivityThread.main(ActivityThread.java:4627)
10-20 22:23:39.155: E/AndroidRuntime(1528): at java.lang.reflect.Method.invokeNative(Native Method)
10-20 22:23:39.155: E/AndroidRuntime(1528): at java.lang.reflect.Method.invoke(Method.java:521)
10-20 22:23:39.155: E/AndroidRuntime(1528): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
10-20 22:23:39.155: E/AndroidRuntime(1528): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
10-20 22:23:39.155: E/AndroidRuntime(1528): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：0)
要显示的对话框为空或可能未初始化。
AlertDialog mAlertDialog = new AlertDialog.Builder(this)
.setView(R.layout.your_custom_layout_view_for_dialog)
.create();
通过这种方式我觉得更容易。