基类BaseActivity

最新推荐文章于 2025-03-20 13:02:01 发布

熙雯FO

最新推荐文章于 2025-03-20 13:02:01 发布

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CC 4.0 BY-SA版权

文章标签：基类BaseActivity

本文链接：https://blog.youkuaiyun.com/Ln_ZooFa/article/details/48049051

本文介绍了一个Android应用中Activity的基类实现，该基类记录了Activity的各种生命周期回调方法，并通过Handler机制进行消息处理。此外，还提供了一个跳转到其他Activity的方法。

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package edu.feicui.orderdishes.activity;

import java.lang.ref.WeakReference;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import edu.feicui.orderdishes.util.LogWarpper;

//Activity 的基类
public class BaseActivity extends Activity {
   private final String TAG = this.getClass().getSimpleName();
   protected Handler mBaseHandler;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       LogWarpper.e(TAG, "onCreate");
       mBaseHandler = new BaseHandler(this);
   }

   @Override
   protected void onStart() {
       super.onStart();
       LogWarpper.e(TAG, "onStart");
   }

   @Override
   protected void onResume() {
       super.onResume();
       LogWarpper.e(TAG, "onResume");
   }

   @Override
   protected void onRestart() {
       super.onRestart();
       LogWarpper.e(TAG, "onRestart");
   }

   @Override
   protected void onPause() {
       LogWarpper.e(TAG, "onPause");
       super.onPause();
   }

   @Override
   protected void onStop() {
       LogWarpper.e(TAG, "onStop");
       super.onStop();
   }

   @Override
   protected void onDestroy() {
       LogWarpper.e(TAG, "onDestroy");
       super.onDestroy();
   }

   protected void goActivity(Class<?> cls) {
       Intent intent = new Intent();
       intent.setClass(this, cls);
       startActivity(intent);
   }

   static class BaseHandler extends Handler {
       // 弱引用，容易被回收
       WeakReference<BaseActivity> mContext;

       public BaseHandler(BaseActivity activity) {
           this.mContext = new WeakReference<BaseActivity>(activity);
       }

       @Override
       public void handleMessage(Message msg) {
           super.handleMessage(msg);
           BaseActivity activity = this.mContext.get();
           if (null != activity) {
               activity.handlerMessage(msg);
           }

       }
   }

   public void handlerMessage(Message msg) {
   }
}