Android代码优化----Application节点的模板写法

新建一个类MyApplication，继承自Application。代码如下：

MyApplication.java:

 1 package com.smyhvae.homepicdemo;
 2
 3 import android.app.Application;
 4 import android.os.Handler;
 5 import android.os.Looper;
 6
 7 /**
 8  * Created by smyhvae on 2015/5/13.
 9  */
10 public class MyApplication extends Application {
11     //获取到主线程的上下文
12     private static MyApplication mContext = null;
13     //获取到主线程的handler
14     private static Handler mMainThreadHandler = null;
15     //获取到主线程的looper
16     private static Looper mMainThreadLooper = null;
17     //获取到主线程
18     private static Thread mMainThead = null;
19     //获取到主线程的id
20     private static int mMainTheadId;
21
22     @Override
23     public void onCreate() {
24         // TODO Auto-generated method stub
25         super.onCreate();
26         this.mContext = this;
27         this.mMainThreadHandler = new Handler();
28         this.mMainThreadLooper = getMainLooper();
29         this.mMainThead = Thread.currentThread();
30         //android.os.Process.myUid()   获取到用户id
31         //android.os.Process.myPid()获取到进程id
32         //android.os.Process.myTid()获取到调用线程的id
33         this.mMainTheadId = android.os.Process.myTid();
34     }
35
36     public static MyApplication getApplication() {
37         return mContext;
38     }
39
40     public static Handler getMainThreadHandler() {
41         return mMainThreadHandler;
42     }
43
44     public static Looper getMainThreadLooper() {
45         return mMainThreadLooper;
46     }
47
48     public static Thread getMainThread() {
49         return mMainThead;
50     }
51
52     public static int getMainThreadId() {
53         return mMainTheadId;
54     }
55
56 }

然后记得在清单文件中进行声明：

1     <application
2         android:allowBackup="true"
3         android:icon="@mipmap/ic_launcher"
4         android:label="@string/app_name"
5         android:theme="@style/AppTheme"
6         android:name=".MyApplication">

需要声明的是上方代码的第6行android:name的属性。