核心代碼
package com.ljq.myproject.activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import com.ljq.myproject.R;
/**
* 1.開始運行demo
* The activity state---->onStart
* The activity state---->onResume
* 2.按下back鍵 返回 activity從stack中彈出
* The activity state---->onPause
* The activity state---->onStop
* The activity state---->onDestroy
* 3.再次啓動demo
* The activity state---->onStart
* The activity state---->onResume
* 4.按下了HOME鍵 當前TASK 處於後臺狀態,系統保存狀態
* The activity state---->onPause
* The activity state---->onStop
* 5.再次啓動demo 回覆原來的TASK activity在棧頂
* The activity state---->onRestart
* The activity state---->onStart
* The activity state---->onResume
*/
public class DemoActivity extends AppCompatActivity {
private static final String TAG = "20164206004 java 3班 劉繼強";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_demo);
Log.d(TAG, "The activity state---->onCreate");
}
protected void onStart() {
super.onStart();
Log.i(TAG, "The activity state---->onStart");
}
protected void onRestart() {
super.onRestart();
Log.i(TAG, "The activity state---->onRestart");
}
protected void onResume() {
super.onResume();
Log.i(TAG, "The activity state---->onResume");
}
protected void onPause() {
super.onPause();
Log.i(TAG, "The activity state---->onPause");
}
protected void onStop() {
super.onStop();
Log.i(TAG, "The activity state---->onStop");
}
protected void onDestroy() {
super.onDestroy();
Log.i(TAG, "The activity state---->onDestroy");
}
}
使用Android Studio的LogCat查看日誌打印信息