Android之使用PackageManager取得程序的包名、图标等

原文地址为： 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.getPacka geManager();  // 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));

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