Intent LaunchIntent = getPackageManager().getLaunchIntentForPackage("com.joyodream.jiji");
                startActivity(LaunchIntent);

Intent intent = new Intent();
                intent.setAction("com.joyodream.jiji.main");
                MainActivity.this.startActivity(intent);

<intent-filter>
                <action android:name="com.joyodream.jiji.main" />
                <category android:name="android.intent.category.DEFAULT" />                
            </intent-filter>

Intent intent = new Intent();
                intent.setData(Uri.parse("joyodream://......"));
                startActivity(intent);



<intent-filter>
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" /> 
                <data android:scheme="joyodream" android:ssp="jiji" />                
            </intent-filter>