public class TestActivity extends Activity {
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  String archiveFilePath="sdcard/jb51.net.apk";//安裝包路徑
  PackageManager pm = getPackageManager();
   PackageInfo info = pm.getPackageArchiveInfo(archiveFilePath, PackageManager.GET_ACTIVITIES);
    if(info != null){
     ApplicationInfo appInfo = info.applicationInfo;
     String appName = pm.getApplicationLabel(appInfo).toString();
     String packageName = appInfo.packageName; //得到安裝包名稱
     String version=info.versionName; //得到版本信息
     // Toast.makeText(TestActivity.this, , Toast.LENGTH_LONG).show();
     Drawable icon = pm.getApplicationIcon(appInfo);//得到圖標(biāo)信息
     TextView tv = (TextView)findViewById(R.id.tv);
     tv.setText("appName:"+appName+"---packageName:"+packageName);
     //顯示圖標(biāo)
     ImageView tu=(ImageView)findViewById(R.id.imageView1);
     tu.setBackgroundDrawable(icon);
    }
   }

  }
 }

}







/** 
* 獲取apk包的信息：版本號(hào)，名稱，圖標(biāo)等 
* @param absPath apk包的絕對(duì)路徑 
* @param context  
*/  
public void apkInfo(String absPath,Context context) {  

    PackageManager pm = context.getPackageManager();  
    PackageInfo pkgInfo = pm.getPackageArchiveInfo(absPath,PackageManager.GET_ACTIVITIES);  
    if (pkgInfo != null) {  
        ApplicationInfo appInfo = pkgInfo.applicationInfo;  
        /* 必須加這兩句，不然下面icon獲取是default icon而不是應(yīng)用包的icon */  
        appInfo.sourceDir = absPath;  
        appInfo.publicSourceDir = absPath;  
        String appName = pm.getApplicationLabel(appInfo).toString();// 得到應(yīng)用名  
        String packageName = appInfo.packageName; // 得到包名  
        String version = pkgInfo.versionName; // 得到版本信息  
        /* icon1和icon2其實(shí)是一樣的 */  
        Drawable icon1 = pm.getApplicationIcon(appInfo);// 得到圖標(biāo)信息  
        Drawable icon2 = appInfo.loadIcon(pm);  
        String pkgInfoStr = String.format("PackageName:%s, Vesion: %s, AppName: %s", packageName, version, appName);  
        Log.i(TAG, String.format("PkgInfo: %s", pkgInfoStr));  
    }  
}

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