不幸的是<app>已停止在android模擬器錯誤。如何解決這個問題？

-1

我是android新手。我在AVD中收到一條消息，比如「不幸的應用已停止」。我只是想做一個關於片段的簡單例子。請幫我解決這個問題。不幸的是<app>已停止在android模擬器錯誤。如何解決這個問題？

我MainActivity.java

package com.example.fragments; 

import android.os.Bundle; 
import android.app.Activity; 

public class MainActivity extends Activity { 

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

}

Fragement1.java

package com.example.fragments; 


import android.annotation.SuppressLint; 
import android.app.Fragment; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 

@SuppressLint("NewApi") 

public class Fragment1 extends Fragment { 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
     Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 

    //----Inflate the layout for this fragment---- 
    return inflater.inflate(R.layout.fragment1, container, false); 
} 

}

Fragment2.java

package com.example.fragments; 

import android.annotation.SuppressLint; 
import android.app.Fragment; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 

@SuppressLint("NewApi") 
public class Fragment2 extends Fragment { 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 


     //----Inflate the layout for this fragment---- 
     return inflater.inflate(R.layout.fragment2, container, false); 
    } 

}

fragment1.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" 
    android:background="#00FF00" > 

    <TextView 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:text="This is fragment #1" 
     android:textColor="#000000" 
     android:textSize="25sp" /> 

</LinearLayout>

fragment2.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" 
    android:background="#FFFE00" > 

    <TextView 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:text="This is fragment #2" 
     android:textColor="#000000" 
     android:textSize="25sp" /> 


</LinearLayout>

activity_main.xml中

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="horizontal" > 

    <fragment 
     android:name="com.example.Fragments.Fragment1" 
     android:id="@+id/fragment1" 
     android:layout_weight="1" 
     android:layout_width="0px" 
     android:layout_height="match_parent" /> 

    <fragment 
     android:name="com.example.Fragments.Fragment2" 
     android:id="@+id/fragment2" 
     android:layout_weight="1" 
     android:layout_width="0px" 
     android:layout_height="match_parent" /> 

</LinearLayout>

我logcat的

03-05 08:05:40.300: D/AndroidRuntime(1219): Shutting down VM 
03-05 08:05:40.300: W/dalvikvm(1219): threadid=1: thread exiting with uncaught exception (group=0xa5ad8ba8) 
03-05 08:05:40.330: E/AndroidRuntime(1219): FATAL EXCEPTION: main 
03-05 08:05:40.330: E/AndroidRuntime(1219): Process: com.example.fragments, PID: 1219 
03-05 08:05:40.330: E/AndroidRuntime(1219): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.fragments/com.example.fragments.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.ActivityThread.access$800(ActivityThread.java:135) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.os.Handler.dispatchMessage(Handler.java:102) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.os.Looper.loop(Looper.java:136) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.ActivityThread.main(ActivityThread.java:5017) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at java.lang.reflect.Method.invoke(Method.java:515) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at dalvik.system.NativeStart.main(Native Method) 
03-05 08:05:40.330: E/AndroidRuntime(1219): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:755) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.view.LayoutInflater.inflate(LayoutInflater.java:492) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.view.LayoutInflater.inflate(LayoutInflater.java:353) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.Activity.setContentView(Activity.java:1929) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at com.example.fragments.MainActivity.onCreate(MainActivity.java:11) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.Activity.performCreate(Activity.java:5231) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  ... 11 more 
03-05 08:05:40.330: E/AndroidRuntime(1219): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.example.Fragments.Fragment1: make sure class name exists, is public, and has an empty constructor that is public 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.Fragment.instantiate(Fragment.java:597) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.Fragment.instantiate(Fragment.java:561) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.Activity.onCreateView(Activity.java:4778) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  ... 21 more 
03-05 08:05:40.330: E/AndroidRuntime(1219): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.Fragments.Fragment1" on path: DexPathList[[zip file "/data/app/com.example.fragments-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.fragments-1, /system/lib]] 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at java.lang.ClassLoader.loadClass(ClassLoader.java:497) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at java.lang.ClassLoader.loadClass(ClassLoader.java:457) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  at android.app.Fragment.instantiate(Fragment.java:583) 
03-05 08:05:40.330: E/AndroidRuntime(1219):  ... 24 more 
03-05 08:05:48.630: I/Process(1219): Sending signal. PID: 1219 SIG: 9

請告訴我爲什麼我得到這樣的我。告訴我解決方案。非常感謝！

來源

2014-03-05 user3383592

產生的原因：android.app.Fragment $ InstantiationException：無法實例化片段com.example.Fragments.Fragment1：確保類名稱存在，是公開的，有一個空的構造函數，它是公共

變化

<fragment 
    android:name="com.example.Fragments.Fragment1"

到

<fragment 
    android:name="com.example.fragments.Fragment1" // notice fragments. f in small

怎麼把包名稱是

package com.example.fragments;

同樣

<fragment 
    android:name="com.example.fragments.Fragment2

來源

2014-03-05 13:21:21 Raghunandan

不幸的是<app>已停止在android模擬器錯誤。如何解決這個問題？

回答

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