android - 主要 Activity 和启动画面优先级问题

Question

我的主 Activity 和启动屏幕有问题。它们都有 Intent 过滤器

        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>

当我从 MainActivity 中删除 Intent 过滤器时，应用程序无法打开。我该怎么办？

Answer 1

AndroidManifest.xml

        <activity
            android:name="com.example.SplashScreen"
            android:label="@string/app_name"
            android:screenOrientation="portrait"
            android:theme="@android:style/Theme.Black.NoTitleBar" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>            
        <activity
            android:name="com.example.MainActivity"
            android:label="@string/app_name" >
        </activity>

启动画面类

public class SplashScreen extends Activity {
    private static int SPLASH_TIME_OUT = 3000;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);

        new Handler().postDelayed(new Runnable() {    
            @Override
            public void run() {
                Intent i = new Intent(SplashScreen.this, MainActivity.class);
                startActivity(i);
                finish();
            }
        }, SPLASH_TIME_OUT);
    }
}

主要 Activity 类

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}