android 在自己的程序中添加Widget

package com.test;import java.util.List;import android.app.Activity;import android.appwidget.AppWidgetHost;import android.appwidget.AppWidgetHostView;import android.appwidget.AppWidgetManager;import android.appwidget.AppWidgetProviderInfo;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.LinearLayout;public class AndroidImActivity extends Activity {    //private WallpaperManager manager;private static final int APPWIDGET_HOST_ID = 1024;private AppWidgetHost  mAppWidgetHost ;private AppWidgetManager manager;int current;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        manager = AppWidgetManager.getInstance(this);        mAppWidgetHost = new AppWidgetHost(this, APPWIDGET_HOST_ID);        mAppWidgetHost.startListening();        current   = mAppWidgetHost.allocateAppWidgetId();//        manager = WallpaperManager.getInstance(this);    }    /*    private void deCodeImage(){    InputStream in = getResources().openRawResource(R.drawable.logo);    Bitmap image = BitmapFactory.decodeStream(in);    int height = image.getHeight();    int width = image.getWidth();    image.getPixel(1, 1);    }        public void test(View v){    deCodeImage();    manager.setWallpaperOffsetSteps(1.0f / 2, 0);    IBinder windowToken = v.getWindowToken();manager.setWallpaperOffsets(windowToken ,  Math.max(0.f, Math.min(0.3f, 1.f)), 0);//manager.sendWallpaperCommand(windowToken, "android.wallpaper.tap", -1, -1, -1,null);    current++;    if(current ==3) current=0;////    try {////manager.clear();////} catch (IOException e) {////e.printStackTrace();////}        }*/        public void test(View v){//    Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);     int appWidgetId = mAppWidgetHost.allocateAppWidgetId();//     intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId );//    startActivityForResult(intent, 101);    List<AppWidgetProviderInfo> insts = manager.getInstalledProviders();    for(AppWidgetProviderInfo info :insts){    if(info.provider.getClassName().equals("com.android.music.MediaAppWidgetProvider")){    manager.bindAppWidgetId(appWidgetId, info.provider);    break;    }    }    System.out.println(appWidgetId);    AppWidgetProviderInfo info =manager. getAppWidgetInfo(appWidgetId); AppWidgetHostView view = mAppWidgetHost.createView(this, appWidgetId,info); view.setAppWidget(appWidgetId, info); view.setMinimumHeight(info.minHeight); view.setMinimumWidth(info.minWidth); LinearLayout l = (LinearLayout) findViewById(R.id.roots); l.addView(view);    }        @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {    System.out.println(requestCode +"==============="+ resultCode);    if(requestCode == 101){    int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);    System.out.println(appWidgetId);     AppWidgetProviderInfo info =manager. getAppWidgetInfo(appWidgetId);     AppWidgetHostView view = mAppWidgetHost.createView(this, appWidgetId,info);     view.setAppWidget(appWidgetId, info);     view.setMinimumHeight(info.minHeight);     view.setMinimumWidth(info.minWidth);     LinearLayout l = (LinearLayout) findViewById(R.id.roots);     l.addView(view);    }    }}
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