Question

当我尝试在模拟器上运行时，我收到此错误：

03-24 11：42：49.843 1120-1120 / com.mindrain.touchbreak E / AndroidRuntime：FATAL EXCEPTION：main android.content.ActivityNotFoundException：无法找到显式活动类{com.mindrain.touchbreak / android.view.Menu};你有没有在AndroidManifest.xml中声明这个活动？在android.app.Instrumentation.checkStartActivityResult（Instrumentation.java:1618）在android.app.Instrumentation.execStartActivity（Instrumentation.java:1417）在android.app.Activity.startActivityForResult（Activity.java:3370）在android.app.Activity.startActivityForResult（Activity.java:3331）在android.app.Activity.startActivity（Activity.java:3566）在android.app.Activity.startActivity（Activity.java:3534）在com.mindrain.touchbreak.Splash $ 1.run（Splash.java:26）在android.os.Handler.handleCallback（Handler.java:725）在android.os.Handler.dispatchMessage（Handler.java:92）在android.os.Looper.loop（Looper.java:137）在android.app.ActivityThread.main（ActivityThread.java:5041） at java.lang.reflect.Method.invokeNative（Native Method）在java.lang.reflect.Method.invoke（Method.java:511）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:793）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:560）在dalvik.system.NativeStart.main（本地方法）

在我的宣言中，我有这个：

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mindrain.touchbreak"
android:versionCode="1"
android:versionName="1.0"
android:installLocation="auto">

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.write_external_storage"/>
<uses-permission android:name="android.permission.read_external_storage"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.set_orientation"/>

<uses-sdk android:minSdkVersion="3"/>

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

    <activity
        android:name=".Splash"
        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=".Splash2"
        android:label="@string/app_name">
    </activity>

</application>

</manifest>

在我的Splash活动中，我有这个：

package com.mindrain.touchbreak;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;


public class Splash extends Activity {


private final int SPLASH_DISPLAY_LENGTH = 1000;


@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    setContentView(R.layout.splash_screen);

    new Handler().postDelayed(new Runnable(){
        @Override
        public void run() {

            Intent mainIntent = new Intent(Splash.this,Menu.class);
            Splash.this.startActivity(mainIntent);
            Splash.this.finish();
        }
    }, SPLASH_DISPLAY_LENGTH);
}
private void openApp(){
    startActivity(new Intent(this,Splash2.class));
    finish();

}
}

在我的Splash2活动中：

package com.mindrain.touchbreak;

import android.app.Activity;
import android.content.Intent;
import android.media.MediaActionSound;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;


public class Splash2 extends Activity {


private final int SPLASH_DISPLAY_LENGTH = 1000;


@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    setContentView(R.layout.splash_screen_2);

    new Handler().postDelayed(new Runnable(){
        @Override
        public void run() {

            Intent mainIntent = new Intent(Splash2.this,MainMenu.class);
            Splash2.this.startActivity(mainIntent);
            Splash2.this.finish();
        }
    }, SPLASH_DISPLAY_LENGTH);
}
private void openApp(){
    finish();
    startActivity(new Intent(this,MainMenu.class));
}
}

在我的MainMenu活动中：

package com.mindrain.touchbreak;

import android.app.Activity;
import android.media.MediaPlayer;
import android.view.View;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;


public class MainMenu extends Activity implements View.OnClickListener {

public MediaPlayer mp = null;

@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.start:
            //startActivity(Game);
            break;
        case R.id.options:
            //startActivity();
            break;
    }

}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_menu);

    Button b = (Button) findViewById(R.id.sound);
    b.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            if (mp == null) {
                //mp = MediaPlayer.create(MainMenu.this, R.raw.menu);
                mp.start();
            } else {
                mp.stop();
                mp = null;
            }
        }

    });
}
}

错误在哪里？

由于

Answer 1

我认为你应该改变

Intent mainIntent = new Intent(Splash.this,Menu.class);

到

Intent mainIntent = new Intent(Splash.this,MainMenu.class);

在Splash Activity中

。

我在Android Studio上尝试模拟项目时出错

1 个答案: