LifecycleActivity

来源：互联网发布：mysql 查询效率优化编辑：程序博客网时间：2024/06/06 01:52
package com.example.hello;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.util.Log;import android.view.Menu;import android.widget.Toast;/** * 进入手机鼠标第一次点击 * onCreate * onStart * onResume *  * 接着关闭 * onPause *  * onStop * onDestroy *  *  *  *  *  * @author ZengWenFeng * */public class LifecycleActivity extends Activity {private String tag = LifecycleActivity.class.getSimpleName();/** * 1、Activity创建执行 */protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_lifecycle);Log.d(tag, "onCreate");}/** * 2、Activity可见时执行 */protected void onStart(){super.onStart();Log.d(tag, "onStart");}/** * 3、Activity可交互时执行 */protected void onResume(){super.onResume();Log.d(tag, "onResume");}/** * 4、Activity重新可见时执行，不是第一次可见 */protected void onRestart(){super.onRestart();Log.d(tag, "onRestart");}/** * 5、Activity暂停执行 */protected void onPause(){super.onPause();Log.d(tag, "onPause");}/** * 6、Activity暂停执行 */protected void onStop(){super.onStop();Log.d(tag, "onStop");}/** * 7、Activity销毁 */protected void onDestroy(){super.onDestroy();Log.d(tag, "onDestroy");}/** * 打开模式为singleTop时候，如果该activity02在栈顶会调用 *  * @author zengwenfeng * @date 2015.04.22 */protected void onNewIntent(Intent intent){super.onNewIntent(intent);Toast.makeText(this, "onNewIntent_message", Toast.LENGTH_SHORT).show();}private String value = "value";/** * 保存实例状态 *  * 1、控件必须要有ID * 2、保存不了变量的值，？？？ */protected void onSaveInstanceState(Bundle outState){//----------------------------------------------------outState.putString("key", value);//保存临时变量//----------------------------------------------------super.onSaveInstanceState(outState);}/** * 还原实例状态 *  * (non-Javadoc) * @see android.app.Activity#onRestoreInstanceState(android.os.Bundle) *  * protected void onCreate(Bundle savedInstanceState) */protected void onRestoreInstanceState(Bundle savedInstanceState) {super.onRestoreInstanceState(savedInstanceState);//----------------------------------------------------if (savedInstanceState == null){return;}String value = savedInstanceState.getString("key");Toast.makeText(this, value, Toast.LENGTH_SHORT).show();//----------------------------------------------------}public boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.lifecycle, menu);return true;}}
阅读全文
0 0