Android 擷取未安裝的APK圖示、版本号、包名等資訊

一、擷取APK圖示

public static Drawable getApkIcon(Context context, String apkPath) {
        PackageManager pm = context.getPackageManager();
        PackageInfo info = pm.getPackageArchiveInfo(apkPath,
                PackageManager.GET_ACTIVITIES);
        if (info != null) {
            ApplicationInfo appInfo = info.applicationInfo;
            appInfo.sourceDir = apkPath;
            appInfo.publicSourceDir = apkPath;
            try {
                return appInfo.loadIcon(pm);
            } catch (OutOfMemoryError e) {
                Log.e("ApkIconLoader", e.toString());
            }
        }
        return null;
    }
           

下面代碼段中PackageManager、PackageInfo、ApplicationInfo均同上面一緻。      

二、擷取APK名稱

String label = appInfo.loadLabel(mPackManager).toString();
           

三、擷取APK包名

String packageName = appInfo.packageName;
           

四、擷取APK版本号

五、推斷APK是否安裝

private boolean isApkInstalled(String packagename)
	  {
	    PackageManager localPackageManager = getPackageManager();
	    try
	    {
	      PackageInfo localPackageInfo = localPackageManager.getPackageInfo(packagename, PackageManager.GET_UNINSTALLED_PACKAGES);
	      return true;
	    }
	    catch (PackageManager.NameNotFoundException localNameNotFoundException)
	    {
	     return false;
	    }
	    
	  }
           

六、安裝APK

private void installAPK(String apkPath)
	 {
		 Intent intent = new Intent();
		 intent.setAction(Intent.ACTION_VIEW);
		 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
		 intent.setDataAndType(Uri.parse("file://" + apkPath),
					"application/vnd.android.package-archive");
		 mContext.startActivity(intent);
	 }
           

七、打開APK

private void openAPK(String packagename)
	 {
		   PackageManager packageManager = mContext.getPackageManager(); 
		   Intent intent=new Intent(); 
		   intent =packageManager.getLaunchIntentForPackage(packagename); 
		   mContext.startActivity(intent);
	 }