原生安卓继承uniapp后执行自定义的applicaiton与activity(实现双击退出按钮监听)

￡神魔★判官ぃ 2023-02-09 14:25 15阅读 0赞

一、自定义application ,乱起八糟的不用管

1、MyApplication.java

public class MyApplication extends DCloudApplication {
    
    
        @Override
        public void onCreate() {
            super.onCreate();
            init();
        }
    
        private void init() {
            // 自己的业务实现
        }
    
        
    
        @Override
        public void onTerminate() {
            super.onTerminate();
        }
      
    }

2、修改AndroidManifest.xml

在<application>中添加(换成自己的路径)

<application
            android:name="com.***.***.MyApplication"
            tools:replace="android:name"

二、自定义启动activity

1、MyPandoraEntry.java（记得换路径）

public class MyPandoraEntry extends PandoraEntry {
    
        @Override
        public void startActivity(Intent intent) {
            ComponentName componentName = intent.getComponent();
            String packageName = componentName.getPackageName();
            String className = componentName.getClassName();
            if(className.equals("io.dcloud.PandoraEntryActivity")){
                intent.setComponent(new ComponentName(packageName, "com.example.myapplication.MyPandoraEntryActivity"));
            }
            Log.e("mypandoraEntry", String.format("activity = %s, startActivity, activity name = %s", this, intent.getComponent().getClassName()));
            super.startActivity(intent);
        }
    
    }

2、MyPandoraEntryActivity.java

public class MyPandoraEntryActivity extends PandoraEntryActivity {
    
        @Override
        public void onCreate(Bundle bundle) {
            super.onCreate(bundle);
        }
    
        @Override
        public void onDestroy() {
            super.onDestroy();
        }
    
    
        @Override
        public void onResume() {
            super.onResume();
        }
    
        @Override
        public void onPause() {
            super.onPause();
        }
    
        private static boolean isExit = false;
    
        //点击第二次时关闭应用
        Handler mHandler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                super.handleMessage(msg);
                isExit = false;
            }
        };
    
        @Override
        public boolean onKeyDown(int keyCode, KeyEvent event) {
            if (keyCode == KeyEvent.KEYCODE_BACK) {
                exit();
                return false;
            }
            return super.onKeyDown(keyCode, event);
        }
    
        /**
         * 点击两次退出程序
         */
        private void exit() {
            if (!isExit) {
                isExit = true;
                Toast.makeText(getApplicationContext(), "再按一次退出程序",Toast.LENGTH_SHORT).show();
                // 利用handler延迟发送更改状态信息
                mHandler.sendEmptyMessageDelayed(0, 2000);
            } else {
                // 双击退出程序时执行
                finish();
                // 以下两行是作为自己的退出逻辑
                getApplication().onTerminate();
                application().stopService();
                //参数用作状态码；根据惯例，非 0 的状态码表示异常终止。
                System.exit(0);
            }
        }
    
        public MyApplication application() {
            return (MyApplication) getApplication();
        }
    }

3、修改AndroidManifest.xml

将PandoraEntry换成自己的MyPandoraEntry

将PandoraEntryActivity换成自己的MyPandoraEntryActivity

<activity
                android:name="com.example.myapplication.MyPandoraEntry"
    ....
    
    <activity
                android:name="com.example.myapplication.MyPandoraEntryActivity"