Android小筆記Activity生命周期

    Activity生命周期：

        onCreate()創(chuàng)建-----》onStart()開始------》onResume()獲取焦點-----》Activityrunning

運行------》onPause()|-頁面跳轉(zhuǎn)----》App process killed-----》onCreate()重新創(chuàng)建一個界面；

                     |-失去焦點-------》onStop()|-應用并沒有停止按home鍵回到應用時--

                                                                    --》onRestart()重新開始

                                                |-應用停止----》onDestroy()銷毀    

源碼：

        public class MainActivity extends Activity {

                                                 //

         private static final String TAG = "MainActivity";

        //創(chuàng)建

         @Override

         protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         Log.i(TAG, "oncreate");

         }

        //開始

         @Override

         protected void onStart() {

         Log.i(TAG, "onstart");

         super.onStart();

         }

        //獲取焦點

         @Override

         protected void onResume() {

         Log.i(TAG, "onresume");

         super.onResume();

         }

        //失去焦點

         @Override

         protected void onPause() {

         Log.i(TAG, "onpasue");

         super.onPause();

         }

        //停止

         @Override

         protected void onStop() {

         Log.i(TAG, "onstop");

         super.onStop();

         }

        //銷毀

         @Override

         protected void onDestroy() {

         Log.i(TAG, "ondestroy");

         super.onDestroy();

         }

        //重新開始

         @Override

         protected void onRestart() {

         Log.i(TAG, "onrestart");

         super.onRestart();

         }

        }