Android課程---Activity中儲存和恢複使用者狀態

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onSaveInstanceState      儲存  在暫停之後和儲存之前調用

onRestoreInstanceState   恢複  再啟動之後和顯示之前調用

 

package com.example.chenshuai.excise;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.view.View;/** * Created by chenshuai on 2016/3/20. */public class excise1 extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.excise1);        Log.e("tag","建立");    }   @Override    protected void onStart() {        super.onStart();        Log.e("tag","啟動");    }    @Override    protected void onResume() {        super.onResume();        Log.e("tag","顯示");    }    @Override    protected void onPause() {        super.onPause();        Log.e("tag","暫停");    }    @Override    protected void onStop() {        super.onStop();        Log.e("tag","停止");    }    @Override    protected void onRestart() {        super.onRestart();        Log.e("tag","重新啟動");    }    @Override    protected void onDestroy() {        super.onDestroy();        Log.e("tag","銷毀");    }    //儲存和恢複使用者狀態    int i = 0;    @Override    protected void onSaveInstanceState(Bundle outState) {        super.onSaveInstanceState(outState);        i++;        Log.e("tag","儲存使用者的狀態"+i);        //以put方法儲存資料，儲存形式為索引值對        outState.putInt("key",i);    }    //恢複使用者之前儲存的狀態    @Override    protected void onRestoreInstanceState(Bundle savedInstanceState) {        super.onRestoreInstanceState(savedInstanceState);        int i = savedInstanceState.getInt("key");        Log.e("tag","擷取使用者之前儲存的狀態"+i);    }

 

Android課程---Activity中儲存和恢複使用者狀態