具有String类的ListActivity是不可点击的

时间:2013-11-03 03:51:37

标签: android class listactivity

我正在使用ListActivity和String类,一切都很好,除了它们是不可点击的。我想将ListActivity与不使用ListView的字符串类一起使用。我想将activity.java绑定到activity。如何解决这个问题?

package com.tutorial.android;
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 [] =   
{"example0", "example1", "example2", "example3", "example4", "example5", "example6"};


@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);
    String activity = classes[position];
    try{
    Class ourClass = Class.forName("com.tutorial.android. " + activity);
    startActivity(new Intent (Menu.this, ourClass));
    }catch(ClassNotFoundException e){
        e.printStackTrace();
    }
}

}

这很明显

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

<uses-sdk
    android:minSdkVersion="7"
    android:targetSdkVersion="8" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.tutorial.android.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="com.tutorial.android.Example0"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="com.tutorial.android.EXAMPLE0" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.tutorial.android.Menu"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="com.tutorial.android.MENU" />

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

1 个答案:

答案 0 :(得分:1)

删除此行com.tutorial.android.后的空格:

Class ourClass = Class.forName("com.tutorial.android. " + activity);

更改为

Class ourClass = Class.forName("com.tutorial.android." + activity);

此外,您必须先实施Activity并在AndroidManifest.xml中注册,否则当您点击列表项时,应用无法找到Activity