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java-单击对话框按钮时泄漏的窗口
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内容图文
当我的墙纸应用程序用户单击“关于”按钮时,我试图向他们显示一个“关于”页面,但是我在日志猫中看到泄漏的窗口错误,并且活动在显示对话框之前退出.
这是代码：
/*
*
* Sensational Wallpapers Pack 1
*
* Wallpaper Designed by AZ2ENVY
*
*/
package com.death2all110.SensationalWallpapers1;
import android.app.Activity;
import android.content.res.Resources;
import android.graphics.BitmapFactory;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.AsyncTask;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
import android.app.AlertDialog;
import android.widget.Button;
import android.content.DialogInterface;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import com.death2all110.SensationalWallpapers1.R;
public class wallpaper extends Activity implements AdapterView.OnItemSelectedListener,
OnClickListener {
private Gallery mGallery;
private ImageView mImageView;
private boolean mIsWallpaperSet;
private Bitmap mBitmap;
private ArrayList<Integer> mThumbs;
private ArrayList<Integer> mImages;
private WallpaperLoader mLoader;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
requestWindowFeature(Window.FEATURE_NO_TITLE);
findWallpapers();
setContentView(R.layout.wallpaper_chooser);
mGallery = (Gallery) findViewById(R.id.gallery);
mGallery.setAdapter(new ImageAdapter(this));
mGallery.setOnItemSelectedListener(this);
mGallery.setCallbackDuringFling(false);
findViewById(R.id.set).setOnClickListener(this);
mImageView = (ImageView) findViewById(R.id.wallpaper);
Button alert = (Button) findViewById(R.id.about_page);
alert.setOnClickListener(this);
}
private void findWallpapers() {
mThumbs = new ArrayList<Integer>(24);
mImages = new ArrayList<Integer>(24);
final Resources resources = getResources();
final String packageName = getApplication().getPackageName();
addWallpapers(resources, packageName, R.array.wallpapers);
addWallpapers(resources, packageName, R.array.extra_wallpapers);
}
private void addWallpapers(Resources resources, String packageName, int list) {
final String[] extras = resources.getStringArray(list);
for (String extra : extras) {
int res = resources.getIdentifier(extra, "drawable", packageName);
if (res != 0) {
final int thumbRes = resources.getIdentifier(extra + "_small",
"drawable", packageName);
if (thumbRes != 0) {
mThumbs.add(thumbRes);
mImages.add(res);
}
}
}
}
@Override
protected void onResume() {
super.onResume();
mIsWallpaperSet = false;
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mLoader != null && mLoader.getStatus() != WallpaperLoader.Status.FINISHED) {
mLoader.cancel(true);
mLoader = null;
}
}
public void onItemSelected(AdapterView parent, View v, int position, long id) {
if (mLoader != null && mLoader.getStatus() != WallpaperLoader.Status.FINISHED) {
mLoader.cancel();
}
mLoader = (WallpaperLoader) new WallpaperLoader().execute(position);
}
/*
* When using touch if you tap an image it triggers both the onItemClick and
* the onTouchEvent causing the wallpaper to be set twice. Ensure we only
* set the wallpaper once.
*/
private void selectWallpaper(int position) {
if (mIsWallpaperSet) {
return;
}
mIsWallpaperSet = true;
try {
InputStream stream = getResources().openRawResource(mImages.get(position));
setWallpaper(stream);
setResult(RESULT_OK);
finish();
} catch (IOException e) {
Log.e("Paperless System", "Failed to set wallpaper: " + e);
}
}
public void onNothingSelected(AdapterView parent) {
}
private class ImageAdapter extends BaseAdapter {
private LayoutInflater mLayoutInflater;
ImageAdapter(wallpaper context) {
mLayoutInflater = context.getLayoutInflater();
}
public int getCount() {
return mThumbs.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView image;
if (convertView == null) {
image = (ImageView) mLayoutInflater.inflate(R.layout.wallpaper_item, parent, false);
} else {
image = (ImageView) convertView;
}
int thumbRes = mThumbs.get(position);
image.setImageResource(thumbRes);
Drawable thumbDrawable = image.getDrawable();
if (thumbDrawable != null) {
thumbDrawable.setDither(true);
} else {
Log.e("Paperless System", String.format(
"Error decoding thumbnail resId=%d for wallpaper #%d",
thumbRes, position));
}
return image;
}
}
public void onClick(View v) {
selectWallpaper(mGallery.getSelectedItemPosition());
}
public void onClick1(View about) {
// If "About was clicked.....
if (about == findViewById(R.id.about_page)) {
// Prepare the alert box!!
AlertDialog.Builder alertbox = new AlertDialog.Builder(this);
// Set message to display...
alertbox.setMessage("Test.....");
// Add a neutral button to the alert box AND assign a listener for said button...
alertbox.setNeutralButton("Ok", new DialogInterface.OnClickListener(){
// click listener for box
public void onClick(DialogInterface arg0, int arg1){
// Button was clicked!!
Toast.makeText(getApplicationContext(), "Dialog closed successfully!", Toast.LENGTH_LONG).show();
}
});
// show it!!!
alertbox.show();
}
}
class WallpaperLoader extends AsyncTask<Integer, Void, Bitmap> {
BitmapFactory.Options mOptions;
WallpaperLoader() {
mOptions = new BitmapFactory.Options();
mOptions.inDither = false;
mOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;
}
protected Bitmap doInBackground(Integer... params) {
if (isCancelled()) return null;
try {
return BitmapFactory.decodeResource(getResources(),
mImages.get(params[0]), mOptions);
} catch (OutOfMemoryError e) {
return null;
}
}
@Override
protected void onPostExecute(Bitmap b) {
if (b == null) return;
if (!isCancelled() && !mOptions.mCancel) {
// Help the GC
if (mBitmap != null) {
mBitmap.recycle();
}
final ImageView view = mImageView;
view.setImageBitmap(b);
mBitmap = b;
final Drawable drawable = view.getDrawable();
drawable.setFilterBitmap(true);
drawable.setDither(true);
view.postInvalidate();
mLoader = null;
} else {
b.recycle();
}
}
void cancel() {
mOptions.requestCancelDecode();
super.cancel(true);
}
}
}
这是logcat：
I/ActivityManager( 59): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.death2all110.SensationalWallpapers1/.wallpaper }
I/ActivityManager( 59): Displayed activity com.death2all110.SensationalWallpapers1/.wallpaper: 474 ms (total 474 ms)
D/dalvikvm( 286): GC freed 1448 objects / 151304 bytes in 131ms
D/dalvikvm( 106): GC freed 2485 objects / 144824 bytes in 245ms
D/dalvikvm( 59): threadid=15: bogus mon 1+0>0; adjusting
D/dalvikvm( 59): GC freed 3666 objects / 207344 bytes in 360ms
D/dalvikvm( 59): GC freed 459 objects / 21096 bytes in 357ms
E/WindowManager( 286): Activity com.death2all110.SensationalWallpapers1.wallpaper has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44c0f3d0 that was originally added here
E/WindowManager( 286): android.view.WindowLeaked: Activity com.death2all110.SensationalWallpapers1.wallpaper has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44c0f3d0 that was originally added here
E/WindowManager( 286): at android.view.ViewRoot.<init>(ViewRoot.java:227)
E/WindowManager( 286): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
E/WindowManager( 286): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
E/WindowManager( 286): at android.view.Window$LocalWindowManager.addView(Window.java:424)
E/WindowManager( 286): at android.app.Dialog.show(Dialog.java:239)
E/WindowManager( 286): at android.app.AlertDialog$Builder.show(AlertDialog.java:802)
E/WindowManager( 286): at com.death2all110.SensationalWallpapers1.wallpaper.onClick(wallpaper.java:244)
E/WindowManager( 286): at android.view.View.performClick(View.java:2364)
E/WindowManager( 286): at android.view.View.onTouchEvent(View.java:4179)
E/WindowManager( 286): at android.widget.TextView.onTouchEvent(TextView.java:6541)
E/WindowManager( 286): at android.view.View.dispatchTouchEvent(View.java:3709)
E/WindowManager( 286): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
E/WindowManager( 286): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
E/WindowManager( 286): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
E/WindowManager( 286): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659)
E/WindowManager( 286): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
E/WindowManager( 286): at android.app.Activity.dispatchTouchEvent(Activity.java:2061)
E/WindowManager( 286): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
E/WindowManager( 286): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691)
E/WindowManager( 286): at android.os.Handler.dispatchMessage(Handler.java:99)
E/WindowManager( 286): at android.os.Looper.loop(Looper.java:123)
E/WindowManager( 286): at android.app.ActivityThread.main(ActivityThread.java:4363)
E/WindowManager( 286): at java.lang.reflect.Method.invokeNative(Native Method)
E/WindowManager( 286): at java.lang.reflect.Method.invoke(Method.java:521)
E/WindowManager( 286): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/WindowManager( 286): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/WindowManager( 286): at dalvik.system.NativeStart.main(Native Method)
D/dalvikvm( 286): GC freed 1704 objects / 168544 bytes in 330ms
它不仅具有泄漏的窗口,而且在单击该按钮时还可以设置墙纸…
任何帮助将不胜感激
解决方法:
改变这个
AlertDialog.Builder alertbox = new AlertDialog.Builder(this);
与
AlertDialog.Builder alertbox = new AlertDialog.Builder(yourActivity.this);
编辑：
Button alert = (Button) findViewById(R.id.about_page);
alert.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// do ur logic
});
对按钮进行以上更改,然后单击
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