Question

我的应用程序已经“遗憾地已停止工作”但在调试中似乎没有错误。到目前为止，它只是一些按钮和带有一个按钮的文本，我试图连接到一个新的活动。这是控制台正在运行，

Waiting for device.
Target device: Nexus_6_API_22 [emulator-5554]
Uploading file
local path: C:\Users\CALLUM\AndroidStudioProjects\Switch-game2\app\build\outputs\apk\app-debug.apk
remote path: /data/local/tmp/gameswitch.switch_game
No apk changes detected. Skipping file upload, force stopping package instead.
DEVICE SHELL COMMAND: am force-stop gameswitch.switch_game
Launching application: gameswitch.switch_game/gameswitch.switch_game.MainActivity.
DEVICE SHELL COMMAND: am start -D -n "gameswitch.switch_game/gameswitch.switch_game.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=gameswitch.switch_game/.MainActivity }
Connected to the target VM, address: 'localhost:8610', transport: 'socket'
Disconnected from the target VM, address: 'localhost:8610', transport: 'socket'

这是我的代码，

<?xml version="1.0" encoding="utf-8"?>

<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>

    //new below here2
    <activity
        android:name=".GamePlay"
        android:label="@string/app_name">
        <intent-filter>
            <action
                android:name="in.wptrafficanalyzer.AnotherActivity"/>
            <category
                android:name="android.intent.category.DEFAULT"/>
        </intent-filter>
    </activity>

</application>

和下一部分

package gameswitch.switch_game;

import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Typeface;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.TextView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Menu;

public class MainActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    //new below
    //Typeface myTypeface = Typeface.createFromAsset(getAssets(), "Retro.ttf");
    //TextView myTextView = (TextView)findViewById(R.id.title);
    //myTextView.setTypeface(myTypeface);

    //new below 2
    OnClickListener listnr = new OnClickListener(){
        @Override
                public void onClick(View v){
            Intent i = new Intent("GamePlay");
            startActivity(i);
        }
    };
    Button btn = (Button) findViewById(R.id.btn);
    btn.setOnClickListener(listnr);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

}

其他类和co是标准字符串和东西。我对Android Studio中的编程很新，我真的不确定是什么，因为我没有看到下划线或错误。

由于再次运行，出现的错误如下

Process: gameswitch.switch_game, PID: 2774
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=GamePlay }
        at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1781)
        at android.app.Instrumentation.execStartActivity(Instrumentation.java:1501)
        at android.app.Activity.startActivityForResult(Activity.java:3745)
        at android.app.Activity.startActivityForResult(Activity.java:3706)
        at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:820)
        at android.app.Activity.startActivity(Activity.java:4016)
        at android.app.Activity.startActivity(Activity.java:3984)
        at gameswitch.switch_game.MainActivity$1.onClick(MainActivity.java:32)
        at android.view.View.performClick(View.java:4780)
        at android.view.View$PerformClick.run(View.java:19866)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5257)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

Answer 1

你的意图是错的。您应该明确设置活动

 Intent intent = new Intent(this, GamePlay.class);

或使用您在清单中声明的操作

 Intent intent = new Intent();
 intent.setAction("in.wptrafficanalyzer.AnotherActivity");

您的代码失败，因为您启动了未声明的操作意图。

不幸的是'app'已停止工作 - 没有错误

1 个答案: