我最近开始学习如何使用 eclipse 开发应用程序,我已经为它制作了一个应用程序和一个菜单。打开应用程序后,我得到了启动屏幕,它应该停留 5 秒钟,然后进入菜单。启动屏幕后,应用程序崩溃。我正在开发 4.1.2。我的日志猫报告如下
05-08 13:46:21.170: V/MediaPlayer(16864): message received msg=2, ext1=0, ext2=0
05-08 13:46:21.170: V/MediaPlayer(16864): playback complete
05-08 13:46:21.170: V/MediaPlayer(16864): callback application
05-08 13:46:21.170: V/MediaPlayer(16864): back from callback
05-08 13:46:23.585: D/Instrumentation(16864):
checkStartActivityResult :Intent { act=com.example.first_app.MENU }
05-08 13:46:23.585: D/Instrumentation(16864):
checkStartActivityResult inent is instance of inent:
05-08 13:46:23.590: W/dalvikvm(16864): threadid=11: thread exiting with uncaught exception (group=0x40f122a0)
05-08 13:46:23.590: E/AndroidRuntime(16864): FATAL EXCEPTION: Thread-1262
05-08 13:46:23.590: E/AndroidRuntime(16864): android.content.ActivityNotFoundException: No
Activity found to handle Intent { act=com.example.first_app.MENU }
05-08 13:46:23.590: E/AndroidRuntime(16864): at
android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1580)
05-08 13:46:23.590: E/AndroidRuntime(16864): at
android.app.Instrumentation.execStartActivity(Instrumentation.java:1431)
05-08 13:46:23.590: E/AndroidRuntime(16864): at
android.app.Activity.startActivityForResult(Activity.java:3446)
05-08 13:46:23.590: E/AndroidRuntime(16864): at
android.app.Activity.startActivityForResult(Activity.java:3407)
05-08 13:46:23.590: E/AndroidRuntime(16864): at
android.app.Activity.startActivity(Activity.java:3617)
05-08 13:46:23.590: E/AndroidRuntime(16864): at
android.app.Activity.startActivity(Activity.java:3585)
05-08 13:46:23.590: E/AndroidRuntime(16864): at
com.example.first_app.Splash$1.run(Splash.java:28)
05-08 13:46:23.615: V/MediaPlayer-JNI(16864): release
05-08 13:46:23.615: V/MediaPlayer(16864): setListener
05-08 13:46:23.615: V/MediaPlayer(16864): disconnect
05-08 13:46:23.620: V/MediaPlayer(16864): destructor
05-08 13:46:23.620: V/MediaPlayer(16864): disconnect
我的代码是
package com.example.first_app;
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[] = {"startingPoint", "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 cheese = classes[position];
try{
Class ourClass = Class.forName("com.example.first_app." + cheese);
Intent ourIntent = new Intent(Menu.this, ourClass);
startActivity(ourIntent);
}catch(ClassNotFoundException e){
e.printStackTrace();
}
}
}
我也有我的清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.first_app"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".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=".startingPoint"
android:label="@string/app_name" >
<intent-filter>
<action android:name="com.example.first_app" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".Menu" android:label="@string/app_name" >
<intent-filter>
<action android:name="come.example.first_app.MENU" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>