感覺今年，後臺每一次切換到前臺，都顯示一次廣告頁面，這種實現的app越來越好，於是乎自己打算寫一個

1.感覺肯定是在生命週期的哪一個步驟之中觸發了這個功能，於是乎，寫了一遍生命週期，權當複習了，

public class AdvActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_adv);
        Log.i("TAG"
 
,"onCreate");

    }

    @Override
    protected void onStart() {
        super.onStart();
        Log.i("TAG","onStart");
    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.i("TAG","onResume");

    }

    @Override
    protected void onPause() {
        super
 
.onPause();
        Log.i("TAG","onPause");
    }

    @Override
    protected void onStop() {
        super.onStop();
        Log.i("TAG","onStop");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.i("TAG","onDestroy");
    }

    @Override
    protected void
 
 onRestart() {
        super.onRestart();
        Log.i("TAG","onRestart");

    }
}

於是乎，找到了，每次都出現的onresume 然後一想不對，這個每次都會出現，應該不合適，跳轉到廣告頁面，廣告頁面結束了，切回來的時候還是會觸發，onResume。
最終找到了onRestart ,測試了下
ok沒問題，目前完美實現需求
貼程式碼

/**
 * 廣告頁面模仿每次顯示出來廣告
 * @author fxr
 */
public class AdvActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_adv);
        Log.i("TAG","onCreate");

    }

    @Override
    protected void onStart() {
        super.onStart();
        Log.i("TAG","onStart");
    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.i("TAG","onResume");

    }

    @Override
    protected void onPause() {
        super.onPause();
        Log.i("TAG","onPause");
    }

    @Override
    protected void onStop() {
        super.onStop();
        Log.i("TAG","onStop");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.i("TAG","onDestroy");
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        Log.i("TAG","onRestart");
        Intent intent=new Intent(AdvActivity.this,AdvTestActivity.class);
        startActivity(intent);
    }
}

public class AdvTestActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_adv_test);
        mHandler.sendEmptyMessageDelayed(0,3000);
    }
    private Handler mHandler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            gohome();
            super.handleMessage(msg);
        }
    };

    private void gohome() {
        Intent intent=new Intent(AdvTestActivity.this,AdvActivity.class);
        startActivity(intent);
        finish();
    }
}