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如何启动已安装的应用程序?

我已使用以下方式安装: File file = new File(dir, "App.apk");

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");

startActivity(intent);

第二次,我正在检查包是否已经安装,如果是,我想启动。

意图意图 = 新意图(com.example.app);

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1 回答 1

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我正在使用这种方法。您应该更改包名和类名。


    private static final String GPS_STATUS_PACKAGE_NAME = "com.eclipsim.gpsstatus2";
    private static final String GPS_STATUS_CLASS_NAME = "com.eclipsim.gpsstatus2.GPSStatus";
   /**
     * Run GpsStatus & toolbox application
     * 
     * @param context
     *            which can start activity
     */
    public static void runGpsStatus(Context context) {
        Intent intent = new Intent(Intent.ACTION_MAIN);
        intent.setComponent(new ComponentName(GPS_STATUS_PACKAGE_NAME, GPS_STATUS_CLASS_NAME));
        List list = context.getPackageManager().queryIntentActivities(intent, PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);

        if (list.size() > 0) {
            // Have application
            context.startActivity(intent);
        } else {
            // None application
        }
    }
于 2011-07-21T11:25:19.753 回答