不幸的是，「這裏的應用程序名」已停止 - 跟着教程

Question

首先，我跟着這個教程：

http://www.codeproject.com/Articles/102065/Android-A-beginner-s-guide?fid=1583614&df=90&mpp=10&noise=1&prof=True&sort=Position&view=Expanded&spc=None&fr=11#xx0xx

我已經查了好這裏的很多類似的帖子，但所有的解決方案已經代碼特定，並沒有工作。

我剛開始開發android應用程序，並發現本教程。當我啓動它時，模擬器給了我這個應用程序已經停止的消息。我的代碼沒有警告，所以我甚至不知道從哪裏開始。

這裏是我的代碼： MainActivity.java

package com.example.test; 

import android.app.Activity; 
import android.os.Bundle; 
import android.view.KeyEvent; 
import android.view.Menu; 
import android.view.View; 
import android.widget.EditText; 
import android.widget.TextView; 


public class MainActivity extends Activity { 

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

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

//get the two controls we created earlier, also with the resource reference and the id 
final TextView lv_View = (TextView)findViewById(R.id.lv_View); 
lv_View.setText("4"); 
final EditText et_Text = (EditText)findViewById(R.id.et_Text); 

//add new KeyListener Callback (to record key input) 
et_Text.setOnKeyListener(new View.OnKeyListener() 
{ 
    //function to invoke when a key is pressed 
    public boolean onKey(View v, int keyCode, KeyEvent event) 
    { 
     //check if there is 
     if (event.getAction() == KeyEvent.ACTION_DOWN) 
     { 
      //check if the right key was pressed 
      if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) 
      { 
           //add the text to the text view 
       lv_View.setText(lv_View.getText() + ", " + 
           et_Text.getText()); 
           //and clear the EditText control 
       et_Text.setText(""); 
       return true; 
      } 
     } 
     return false; 
    } 
}); 
return true; 
} 
} 

測試清單

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

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="15" /> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name="com.example.test.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> 
</application> 

</manifest> 

的strings.xml

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

<string name="app_name">test</string> 
<string name="hello_world">&quot;I got it to work!&quot;</string> 
<string name="menu_settings">Settings</string> 

</resources> 

activity_main.xml中（佈局）

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context=".MainActivity" 
> 
<edittext android:layout_height="wrap_content" 
     android:layout_width="fill_parent" android:textColor="#FF0000FF" 
     android:id="@+id/et_Text" /> 
<textview android:layout_height="wrap_content" android:layout_width="fill_parent" 
android:textColor="#FF00FF00" android:id="@+id/lv_View" /> 
<TextView 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_centerHorizontal="true" 
    android:layout_centerVertical="true" 
    android:textColor="#FF00FF00" 
    android:text="@string/hello_world" 
    /> 

</RelativeLayout> 

logcat的報告

12-18 21:34:37.873: W/Trace(713): Unexpected value from nativeGetEnabledTags: 0 
12-18 21:34:38.442: W/Trace(713): Unexpected value from nativeGetEnabledTags: 0 
12-18 21:34:38.522: W/Trace(713): Unexpected value from nativeGetEnabledTags: 0 
12-18 21:34:39.562: D/AndroidRuntime(713): Shutting down VM 
12-18 21:34:39.602: W/dalvikvm(713): threadid=1: thread exiting with uncaught exception  (group=0x40a70930) 
12-18 21:34:39.812: E/AndroidRuntime(713): FATAL EXCEPTION: main 
12-18 21:34:39.812: E/AndroidRuntime(713): java.lang.RuntimeException: Unable to start  activity ComponentInfo{com.example.test/com.example.test.MainActivity}:  android.view.InflateException: Binary XML file line #7: Error inflating class edittext 
12-18 21:34:39.812: E/AndroidRuntime(713): at  android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.app.ActivityThread.access$600(ActivityThread.java:141) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.os.Handler.dispatchMessage(Handler.java:99) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.os.Looper.loop(Looper.java:137) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.app.ActivityThread.main(ActivityThread.java:5039) 
12-18 21:34:39.812: E/AndroidRuntime(713): at java.lang.reflect.Method.invokeNative(Native Method) 
12-18 21:34:39.812: E/AndroidRuntime(713): at java.lang.reflect.Method.invoke(Method.java:511) 
12-18 21:34:39.812: E/AndroidRuntime(713): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
12-18 21:34:39.812: E/AndroidRuntime(713): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
12-18 21:34:39.812: E/AndroidRuntime(713): at dalvik.system.NativeStart.main(Native Method) 
12-18 21:34:39.812: E/AndroidRuntime(713): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class edittext 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
12-18 21:34:39.812: E/AndroidRuntime(713): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.app.Activity.setContentView(Activity.java:1881) 
12-18 21:34:39.812: E/AndroidRuntime(713): at com.example.test.MainActivity.onCreate(MainActivity.java:17) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.app.Activity.performCreate(Activity.java:5104) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
12-18 21:34:39.812: E/AndroidRuntime(713): ... 11 more 
12-18 21:34:39.812: E/AndroidRuntime(713): Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.edittext" on path: /data/app/com.example.test-2.apk 
12-18 21:34:39.812: E/AndroidRuntime(713): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65) 
12-18 21:34:39.812: E/AndroidRuntime(713): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
12-18 21:34:39.812: E/AndroidRuntime(713): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.view.LayoutInflater.createView(LayoutInflater.java:552) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:643) 
12-18 21:34:39.812: E/AndroidRuntime(713): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:660) 
12-18 21:34:39.812: E/AndroidRuntime(713): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685) 
12-18 21:34:39.812: E/AndroidRuntime(713): ... 21 more 

感謝您的幫助！如果您需要更多信息，請告訴我。我仍然不確定需要什麼來解決這些錯誤。

Answer 1

在您的佈局XML文件，你需要確保textview和edittext的首字母大寫，否則Android將不知道如何膨脹的佈局。這是因爲android佈局inflater嘗試通過使用XML文件中指定的名稱來實例化類。在這種情況下，android.view.TextView和android.view.EditText。在你的日誌貓

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".MainActivity"> 

    <EditText android:layout_height="wrap_content" 
     android:layout_width="fill_parent" 
     android:textColor="#FF0000FF" 
     android:id="@+id/et_Text" /> 

    <TextView android:layout_height="wrap_content" 
     android:layout_width="fill_parent" 
     android:textColor="#FF00FF00" 
     android:id="@+id/lv_View" /> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_centerHorizontal="true" 
     android:layout_centerVertical="true" 
     android:textColor="#FF00FF00" 
     android:text="@string/hello_world" /> 

</RelativeLayout> 

Answer 2

你需要看你的拼寫。像這樣的事情是敏感。

edittext 

應該是

EditText 

同樣的，正下方的textview元件。

應該

TextView 

Answer 3

尋找我會認爲你收到此錯誤，因爲edittext應EditText，並與TextView