Android之使用PackageManager取得程序的包名、图标等

效果图：

 

Model代码：

 public  class AppInfo { 
    
      private String appLabel;     
      private Drawable appIcon ;   
      private Intent intent ;      
      private String pkgName ;     
      
      public AppInfo(){} 
      
      public String getAppLabel() { 
          return appLabel; 
     } 
      public  void setAppLabel(String appName) { 
          this.appLabel = appName; 
     } 
      public Drawable getAppIcon() { 
          return appIcon; 
     } 
      public  void setAppIcon(Drawable appIcon) { 
          this.appIcon = appIcon; 
     } 
      public Intent getIntent() { 
          return intent; 
     } 
      public  void setIntent(Intent intent) { 
          this.intent = intent; 
     } 
      public String getPkgName(){ 
          return pkgName ; 
     } 
      public  void setPkgName(String pkgName){ 
          this.pkgName=pkgName ; 
     } 

} 

 

继承BaseAdapter： 

 public  class BrowseApplicationInfoAdapter  extends BaseAdapter { 
      
      private List<AppInfo> mlistAppInfo =  null; 
      
     LayoutInflater infater =  null; 
      
      public BrowseApplicationInfoAdapter(Context context,  List<AppInfo> apps) { 
         infater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
         mlistAppInfo = apps ; 
     } 
     @Override 
      public  int getCount() { 
          //  TODO Auto-generated method stub 
         System.out.println("size" + mlistAppInfo.size()); 
          return mlistAppInfo.size(); 
     } 
     @Override 
      public Object getItem( int position) { 
          //  TODO Auto-generated method stub 
          return mlistAppInfo.get(position); 
     } 
     @Override 
      public  long getItemId( int position) { 
          //  TODO Auto-generated method stub 
          return 0; 
     } 
     @Override 
      public View getView( int position, View convertview, ViewGroup arg2) { 
         System.out.println("getView at " + position); 
         View view =  null; 
         ViewHolder holder =  null; 
          if (convertview ==  null || convertview.getTag() ==  null) { 
             view = infater.inflate(R.layout.browse_app_item,  null); 
             holder =  new ViewHolder(view); 
             view.setTag(holder); 
         }  
          else{ 
             view = convertview ; 
             holder = (ViewHolder) convertview.getTag() ; 
         } 
         AppInfo appInfo = (AppInfo) getItem(position); 
         holder.appIcon.setImageDrawable(appInfo.getAppIcon()); 
         holder.tvAppLabel.setText(appInfo.getAppLabel()); 
         holder.tvPkgName.setText(appInfo.getPkgName()); 
          return view; 
     } 
 
      class ViewHolder { 
         ImageView appIcon; 
         TextView tvAppLabel; 
         TextView tvPkgName; 
 
          public ViewHolder(View view) { 
              this.appIcon = (ImageView) view.findViewById(R.id.imgApp); 
              this.tvAppLabel = (TextView) view.findViewById(R.id.tvAppLabel); 
              this.tvPkgName = (TextView) view.findViewById(R.id.tvPkgName); 
         } 
     } 
 } 

 

MainActivity：

 public  class MainActivity  extends Activity  implements OnItemClickListener { 
 
      private ListView listview =  null; 
 
      private List<AppInfo> mlistAppInfo =  null; 
 
     @Override 
      public  void onCreate(Bundle savedInstanceState) { 
          super.onCreate(savedInstanceState); 
         setContentView(R.layout.browse_app_list); 
 
         listview = (ListView) findViewById(R.id.listviewApp); 
         mlistAppInfo =  new ArrayList<AppInfo>(); 
         queryAppInfo();  //  查询所有应用程序信息 
         BrowseApplicationInfoAdapter browseAppAdapter =  new BrowseApplicationInfoAdapter( 
                  this, mlistAppInfo); 
         listview.setAdapter(browseAppAdapter); 
         listview.setOnItemClickListener( this); 
     } 
      //  点击跳转至该应用程序 
      public  void onItemClick(AdapterView<?> arg0, View view,  int position, 
              long arg3) { 
          //  TODO Auto-generated method stub 
         Intent intent = mlistAppInfo.get(position).getIntent(); 
         startActivity(intent); 
     } 
      //  获得所有启动Activity的信息，类似于Launch界面 
      public  void queryAppInfo() { 
         PackageManager pm =  this.getPackageManager();  // 获得PackageManager对象 
         Intent mainIntent =  new Intent(Intent.ACTION_MAIN,  null); 
         mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); 
          //  通过查询，获得所有ResolveInfo对象. 
         List<ResolveInfo> resolveInfos = pm 
                 .queryIntentActivities(mainIntent, PackageManager.MATCH_DEFAULT_ONLY); 
          //  调用系统排序 ， 根据name排序
          //  该排序很重要，否则只能显示系统应用，而不能列出第三方应用程序 
         Collections.sort(resolveInfos, new ResolveInfo.DisplayNameComparator(pm)); 
          if (mlistAppInfo !=  null) { 
             mlistAppInfo.clear(); 
              for (ResolveInfo reInfo : resolveInfos) { 
                 String activityName = reInfo.activityInfo.name;  //  获得该应用程序的启动Activity的name 
                 String pkgName = reInfo.activityInfo.packageName;  //  获得应用程序的包名 
                 String appLabel = (String) reInfo.loadLabel(pm);  //  获得应用程序的Label 
                 Drawable icon = reInfo.loadIcon(pm);  //  获得应用程序图标
                  //  为应用程序的启动Activity 准备Intent 
                 Intent launchIntent =  new Intent(); 
                 launchIntent.setComponent( new ComponentName(pkgName, 
                         activityName)); 
                  //  创建一个AppInfo对象，并赋值 
                 AppInfo appInfo =  new AppInfo(); 
                 appInfo.setAppLabel(appLabel); 
                 appInfo.setPkgName(pkgName); 
                 appInfo.setAppIcon(icon); 
                 appInfo.setIntent(launchIntent); 
                 mlistAppInfo.add(appInfo);  //  添加至列表中 
             } 
         } 
     } 

}  

 

AndroidManifest文件：

 <? xml version="1.0" encoding="utf-8" ?> 
 < manifest  xmlns:android ="http://schemas.android.com/apk/res/android" 
     package ="com.qin.appinfo"  android:versionCode ="1"  android:versionName ="1.0" > 
      < application  android:icon ="@drawable/icon"  android:label ="@string/app_name" > 
          < activity  android:name =".MainActivity"  android:label ="@string/app_name" > 
              < intent-filter > 
                  < action  android:name ="android.intent.action.MAIN"   /> 
                  < category  android:name ="android.intent.category.LAUNCHER"   /> 
                  < category  android:name ="android.intent.category.DEFAULT"   /> 
              </ intent-filter > 
          </ activity > 
      </ application > 

</manifest>   

 

browse_app_item.xml:

 <? xml version="1.0" encoding="utf-8" ?> 
 < LinearLayout  xmlns:android ="http://schemas.android.com/apk/res/android" 
     android:layout_width ="fill_parent"  android:layout_height ="50dip" > 
 
      < ImageView  android:id ="@+id/imgApp"  android:layout_width ="wrap_content" 
         android:layout_height ="fill_parent"   ></ ImageView > 
      < RelativeLayout  android:layout_width ="fill_parent"   android:layout_marginLeft ="10dip" 
         android:layout_height ="40dip" > 
          < TextView  android:id ="@+id/tvLabel"  android:layout_width ="wrap_content" 
             android:layout_height ="wrap_content"  android:text ="AppLable : " ></ TextView > 
          < TextView  android:id ="@+id/tvAppLabel"  android:layout_width ="wrap_content" 
             android:layout_toRightOf ="@id/tvLabel"  android:layout_height ="wrap_content" 
             android:layout_marginLeft ="3dip"  android:text ="Label"  android:textColor ="#FFD700" ></ TextView > 
          < TextView  android:id ="@+id/tvName"  android:layout_width ="wrap_content" 
             android:layout_height ="wrap_content"  android:layout_below ="@id/tvLabel"  
             android:text ="包名:" ></ TextView > 
          < TextView  android:id ="@+id/tvPkgName"  android:layout_width ="wrap_content" 
             android:layout_height ="wrap_content"  android:layout_below ="@id/tvAppLabel" 
             android:layout_alignLeft ="@id/tvAppLabel"  android:textColor ="#FFD700" ></ TextView > 
      </ RelativeLayout > 
 </ LinearLayout > 

 

broswe_app_list.xml:

 <? xml version="1.0" encoding="utf-8" ?> 
 < LinearLayout  xmlns:android ="http://schemas.android.com/apk/res/android" 
     android:orientation ="vertical"  android:layout_width ="fill_parent" 
     android:layout_height ="fill_parent" >> 
      < ListView  android:id ="@+id/listviewApp"  android:layout_width ="fill_parent" 
         android:layout_height ="fill_parent"   ></ ListView > 

</LinearLayout>  

根据packagename来启动程序：

                    final String activityName = getActivityName(packageName);if (null == activityName) {Toast.makeText(ShowAppActivity.this, "程序无法启动",Toast.LENGTH_SHORT);return;}Intent intent = new Intent();intent.setComponent(new ComponentName(packageName,activityName));startActivity(intent);

 

 

根据packagename来卸载程序：

Intent deleteIntent = new Intent();deleteIntent.setAction(Intent.ACTION_DELETE);deleteIntent.setData(Uri.parse("package:" + packagename));