Activity意外杀死保存数据

Activity意外杀死保存数据
例如
1.横竖屏切换
2.当Activity处于stop状态,可能被系统杀死

package com.luohao.hightpoint.activity;

import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class DetailActivity extends Activity {


//如果由于某种原因当前Activity被系统意外杀死后重新创建时,savedInstanceState有值
     */
 @Override
    protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_detail);


 }    /**
     * 保存临时数据
     */
    @Override
    protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);

    outState.putString("key", "临时数据2222");

    System.out.println("outState = " + outState);
    }
    /**
     * 临时数据的还原一般在这
    * 如果由于某种原因当前Activity被系统意外杀死后重新创建时,savedInstanceState有值
    * */
    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    System.out.println("DetailActivity.onRestoreInstanceState");
    String string = savedInstanceState.getString("key");

}