Question

我想制作android启动器。有人可以说我怎么能有2个活动，第一个应该开始第二个活动，category:home必须有intent-filter。我已经尝试了这个，但是当我按下按钮时会停止，而在日志中我有Unable to find explicit activity class {com.example.amadey.myapplication3/com.example.amadey.myapplication3.HomeScreen}; have you declared this activity in your AndroidManifest.xml?

这是我的代码：

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(MainActivity.this,HomeScreen.class));
            }
        });
    }

}

HomeScreen.class：

    public class HomeScreen extends Activity {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_home);
        }

     }

我的清单文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.amadey.myapplication3" >

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >

                <intent-filter>

                    <action android:name="android.intent.action.MAIN" />

                    <category android:name="android.intent.category.LAUNCHER" />

                </intent-filter>

        </activity>
        <activity
            android:name="com.example.amadey.myapplication3.HomeScreen">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.HOME" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
    </application>

</manifest>

从第一个活动开始与home home的第二个活动

0 个答案: