Android根据APP包名启动应用

    public void openApp(String packageName, Context context) {
        PackageManager packageManager = context.getPackageManager();
        Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
        resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        resolveIntent.setPackage(packageName);

        List<ResolveInfo> apps = packageManager.queryIntentActivities(
                resolveIntent, 0);

        ResolveInfo ri = apps.iterator().next();
        if (ri != null) {
            String className = ri.activityInfo.name;

            Intent intent = new Intent(Intent.ACTION_MAIN);
            intent.addCategory(Intent.CATEGORY_LAUNCHER);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            ComponentName cn = new ComponentName(packageName, className);

            intent.setComponent(cn);
            context.startActivity(intent);
        }
    }