不幸的是，当按回按钮时，项目名称已经停止。
不幸的是，当按回按钮时，项目名称已经停止。
提问于 2015-03-09 15:41:50
当我在计数活动，我想返回菜单活动，我得到一个错误的“不幸的项目名称已停止”时，按上按钮。
这是错误日志：
03-09 14:13:33.767: E/Trace(619): error opening trace file: No such file or directory (2)
03-09 14:14:05.537: E/AndroidRuntime(619): FATAL EXCEPTION: main
03-09 14:14:05.537: E/AndroidRuntime(619): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.projetandroid/android.view.Menu}; have you declared this activity in your AndroidManifest.xml?
03-09 14:14:05.537: E/AndroidRuntime(619): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1618)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.app.Activity.startActivityForResult(Activity.java:3370)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.app.Activity.startActivityForResult(Activity.java:3331)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.app.Activity.startActivity(Activity.java:3566)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.app.Activity.startActivity(Activity.java:3534)
03-09 14:14:05.537: E/AndroidRuntime(619): at com.example.projetandroid.compteur.onOptionsItemSelected(compteur.java:56)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.app.Activity.onMenuItemSelected(Activity.java:2548)
03-09 14:14:05.537: E/AndroidRuntime(619): at com.android.internal.widget.ActionBarView$3.onClick(ActionBarView.java:167)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.view.View.performClick(View.java:4204)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.view.View$PerformClick.run(View.java:17355)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.os.Handler.handleCallback(Handler.java:725)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.os.Handler.dispatchMessage(Handler.java:92)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.os.Looper.loop(Looper.java:137)
03-09 14:14:05.537: E/AndroidRuntime(619): at android.app.ActivityThread.main(ActivityThread.java:5041)
03-09 14:14:05.537: E/AndroidRuntime(619): at java.lang.reflect.Method.invokeNative(Native Method)
03-09 14:14:05.537: E/AndroidRuntime(619): at java.lang.reflect.Method.invoke(Method.java:511)
03-09 14:14:05.537: E/AndroidRuntime(619): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-09 14:14:05.537: E/AndroidRuntime(619): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-09 14:14:05.537: E/AndroidRuntime(619): at dalvik.system.NativeStart.main(Native Method)这是我的AndroidManifest文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.projetandroid"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.SET_WALLPAPER"/>
<application
android:allowBackup="true"
android:theme="@style/AppTheme"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name="com.example.projetandroid.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=".Count"
android:label="Count" >
</activity>
<activity
android:name="com.example.projetandroid.Menu"
android:label="Menu" >
</activity>
</application>
</manifest>这是我的计数活动
package com.example.projetandroid;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class count extends Activity {
Button btnadd,bsubtract ;
TextView text;
public static int Count=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getActionBar().setDisplayHomeAsUpEnabled(true);
setContentView(R.layout.activity_main);
btnadd = (Button) findViewById(R.id.button1);
bsubtract = (Button) findViewById(R.id.button2);
text = (TextView)findViewById(R.id.textView1);
text.setText("Your Total is "+Count);
btnadd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Count++;
text.setText("Your Total is "+Count);
}
});
bsubtract.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Count--;
text.setText("Your Total is "+Count);
}
});
}
// the method responsible for back button
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()){
case android.R.id.home:
Intent intent = new Intent(compteur.this,Menu.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
}
return true;
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
finish();
}
}这是我的菜单活动：
package com.example.projetandroid;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class Menu extends ListActivity {
String Classes[]={"Manuel Count","example1","example2"};
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setListAdapter(new ArrayAdapter<String>(Menu.this,android.R.layout.simple_list_item_1,Classes) );
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);
Class cs = null;
try {
if(Classes[position]=="Manuel Count")
{
Classes[position]="count";
}
cs = Class.forName("com.example.projetandroid."+Classes[position]);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Intent intent = new Intent(Menu.this ,cs );
startActivity(intent);
}
}这是我的第一次活动
package com.example.projetandroid;
import android.app.Activity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.Window;
public class splash extends Activity {
MediaPlayer media;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Thread Timer = new Thread(){
public void run()
{
try{
media = MediaPlayer.create(splash.this,R.raw.theme);
media.start();
sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally{
Intent intent = new Intent(splash.this , Menu.class);
startActivity(intent);
}
}
};
Timer.start();
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
media.release();
}
}回答 1
Stack Overflow用户
回答已采纳
发布于 2015-03-09 15:45:51
您导入了错误的菜单类。
你们的宣言声明：
com.example.projetandroid.Menu但你进口了：
import android.view.Menu;更改声明以与导入匹配，反之亦然。这通常是一个好主意，使您的类名更独特，以避免这种问题。
而不是菜单，试试MyMenu。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/28946054
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