Android - 列表視圖 - 開始新的活動

Question

我正在嘗試構建一個活動，其中列表視圖中的每個列表項都打開一個新活動。但每次運行應用程序，它都被迫關閉。請幫助guyzz。我正在嘗試它很長一段時間！下面是佈局文件：

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


<TextView 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:gravity="center" 
    android:text="C++ PROGRAMS" 
    android:textStyle="bold" 
    android:textSize="25sp" /> 
<ListView 
    android:id="@android:id/list" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" > 

這裏是Java類：

public class Second_listview extends ListActivity{ 
    static final String[] type = new String[]{ 

    "Array", "Strings" 

}; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 

    setContentView(R.layout.second_listview); 

    // setting up list view 

    setListAdapter (new ArrayAdapter<String>(this, android.R.id.list, type)); 
    ListView list = getListView(); 
    list.setTextFilterEnabled(true); 
    list.setOnItemClickListener(new OnItemClickListener(){ 

     @Override 
     public void onItemClick(AdapterView<?> arg0, View view, int arg2, 
       long arg3) { 
      // TODO Auto-generated method stub 

      //linking each list item to start a new activity 

      switch(arg2) 

      { 
       case 1 : Intent myIntent1 = new Intent(view.getContext(), Array_list.class); 
         startActivityForResult(myIntent1, 0); 
         break; 
       case 2 : Intent myIntent2 = new Intent(view.getContext(), String_list.class); 
         startActivityForResult(myIntent2, 0); 
         break; 

      } 

     } 



    }); 
} 

} 

這裏是logcat的：

01-19 13:26:03.123: E/AndroidRuntime(1323): FATAL EXCEPTION: Thread-132 
01-19 13:26:03.123: E/AndroidRuntime(1323): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.example.c_progams.CLEARSCREEN } 
01-19 13:26:03.123: E/AndroidRuntime(1323):  at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1622) 
01-19 13:26:03.123: E/AndroidRuntime(1323):  at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417) 
01-19 13:26:03.123: E/AndroidRuntime(1323):  at android.app.Activity.startActivityForResult(Activity.java:3370) 
01-19 13:26:03.123: E/AndroidRuntime(1323):  at android.app.Activity.startActivityForResult(Activity.java:3331) 
01-19 13:26:03.123: E/AndroidRuntime(1323):  at android.app.Activity.startActivity(Activity.java:3566) 
01-19 13:26:03.123: E/AndroidRuntime(1323):  at android.app.Activity.startActivity(Activity.java:3534) 
01-19 13:26:03.123: E/AndroidRuntime(1323):  at com.example.c_progams.First_screen$1.run(First_screen.java:27) 

這裏是清單文件：

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

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="16" /> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 

    <activity 
     android:name="com.example.c_progams.First_screen" 
     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="com.example.c_progams.Second_listview" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.SECOND_LISTVIEW" /> 

      <category android:name="android.intent.category.DEFAULT" /> 
     </intent-filter> 
    </activity> 

<activity 
     android:name="com.example.c_progams.Array_list" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.ARRAY_LIST" /> 

      <category android:name="android.intent.category.DEFAULT" /> 
     </intent-filter> 
    </activity> 


    <activity 
     android:name="com.example.c_progams.String_list" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.STRING_LIST" /> 

      <category android:name="android.intent.category.DEFAULT" /> 
     </intent-filter> 
    </activity> 



</application> 


</manifest> 

Answer 1

這裏是正確的代碼...

Java Code :

public class Sample extends ListActivity { 
static final String[] type = new String[] { "Array", "Strings" }; 

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

    ListView list = getListView(); 
    setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, type)); 
    list.setTextFilterEnabled(true); 
    list.setOnItemClickListener(new OnItemClickListener() { 

     @Override 
     public void onItemClick(AdapterView<?> arg0, View view, int arg2, long arg3) { 
      switch (arg2) { 
      case 1: 
       Intent myIntent1 = new Intent(view.getContext(), Array_list.class); 
       startActivityForResult(myIntent1, 0); 
       break; 
      case 2: 
       Intent myIntent2 = new Intent(view.getContext(), String_list.class); 
       startActivityForResult(myIntent2, 0); 
       break; 

      } 

     } 

    }); 
} 

} 

在你的AndroidManifest.xml添加這兩種線<Application> TAG

<application android:theme="@style/AppTheme" android:label="@string/app_name" android:icon="@drawable/ic_launcher"> 

Answer 2

編輯：不理我，你和你的清單編輯在此之前已完成。

看起來您還沒有在您的AndroidManifest.xml中定義活動。

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="your.package.name"> 
    <application android:icon="@drawable/icon" android:label="@string/app_name"> 
     <activity android:name=".Activity1" android:label="@string/app_name"></activity> 
     <activity android:name=".Activity2"></activity> 
    </application> 
    <uses-sdk android:minSdkVersion="4" /> 
</manifest> 

Answer 3

軟件包名稱不遵循駱駝套管或下劃線或超標。

更改您的包名狀

package="com.example.cprogams" 

參考：

Naming Conventions

Package Name Validation

感謝