使用线程的意图不起作用

时间:2013-07-11 23:51:37

标签: java android xml android-intent android-activity

我知道我已经问过了这个,但我得不到足够的答案。我试图开始一个活动,但模拟器保持在第一个活动。我已经尝试过所有方法,但它永远不会奏效。 youtube视频显示它应该可以工作,但它永远不会。是否有遗漏或以下代码有什么问题?

//First Activity:


package com.mtprogramming.magicsquaresgame;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.content.Intent;

public class Opening extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_opening);
    Thread timer = new Thread(){
        public void run(){
            try{
                sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }finally{
                Intent open = new Intent("com.mtprogramming.magicsquaresgame.MENU");
                startActivity(open);
            }

        }
    };
    timer.start();
}


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

}

//Second Activity:

package com.mtprogramming.magicsquaresgame;

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


//Created by suprav on 7/11/13.

public class Menu extends Activity {
public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_menu);
}
}

//Android Manifest:

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

<uses-sdk
    android:minSdkVersion="7"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.mtprogramming.magicsquaresgame.Opening"
        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.mtprogramming.magicsquaresgame.Menu"
        android:label="@string/title_activity_menu"
        android:parentActivityName="Opening" >
        <intent-filter>
            <action android:name="com.mtprogramming.magicsquaresgame.MENU"/>
            <category android:name="android.intent.category.DEFAULT"/>
        </intent-filter>
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="Opening" />
    </activity>
</application>

</manifest>

2 个答案:

答案 0 :(得分:2)

试试这个:

Intent open = new Intent(Opening.this, Menu.class);
startActivity(open);

答案 1 :(得分:1)

我认为我发现了这个问题,好像元数据属性没有被正确使用,因此活动没有被启动,这是使用该属性的正确方法:

  <activity android:name=".TestActivity" >
        <meta-data android:name="android.support.PARENT_ACTIVITY"
              android:value=".TestParentActivity">
        </meta-data>
  </activity>

所以,好像你在“android:value =”Opening“

中错过了一个点

问候!