003.一个Activity的生命周期演示

官方的生命周期图

package com.hanpang.activitylife;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        System.out.println("创建");
    }

    @Override
    protected void onStart() {
        super.onStart();
        System.out.println("开始");
    }

    @Override
    protected void onStop() {
        super.onStop();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        System.out.println("销毁");
    }

    @Override
    protected void onPause() {
        super.onPause();
        System.out.println("暂停");
    }

    @Override
    protected void onResume() {
        super.onResume();
        System.out.println("运行");
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        System.out.println("重启");
    }
}

重写了上述的七个方法,我们进行测试

运行过程演示.gif