横竖屏切换保存数据

来源：互联网发布：怎么js调用方法编辑：程序博客网时间：2024/05/22 08:00
public class MainActivity extends Activity {    private int xueLiang;    private Button button;    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        button = (Button) findViewById(R.id.ac_loign_but);        if (savedInstanceState == null) {            xueLiang = 1000;            Toast.makeText(MainActivity.this, "初始血量为" + xueLiang , 0).show();        }else {            xueLiang = savedInstanceState.getInt("xueLiang");            Toast.makeText(MainActivity.this, "应用出现意外，初始血量为" + xueLiang , 0).show();        }        xueLiang = savedInstanceState == null?1000:savedInstanceState.getInt("xueLiang");        Log.i("myTag", "onCreate---------");    }    public void loginBtu(View v) {        Intent intent = new Intent(MainActivity.this,LoginJump.class);        startActivity(intent);    }    protected void onDestroy() {        super.onDestroy();        Log.i("myTag", "onDestroy-----------");    }    protected void onStart() {        super.onStart();        xueLiang = xueLiang -50;        Log.i("myTag", "onStart-----------");        Toast.makeText(MainActivity.this, "开始打怪，血量为" + xueLiang, 0).show();    }    protected void onStop() {        super.onStop();        Log.i("myTag", "onStop-----------");    }    protected void onResume() {        super.onResume();        xueLiang = xueLiang - 100;        Log.i("myTag", "onResume-----------");        Toast.makeText(MainActivity.this, "开始打boss，血量为" + xueLiang, 0).show();    }    protected void onPause() {        super.onPause();        Log.i("myTag", "onPauses-----------");    }    protected void onRestart() {        super.onRestart();        Log.i("myTag", "onRestart-----------");    }    /**     * 当应用意外死亡是时（内存不足，屏幕切换等），此方法会自动调用，自动保存当前视图的状态     *      * 我们可以利用此方法进行数据保存     *      * Bundle outState 会被传递到下一次打开activity的oncreate方法中     * */    protected void onSaveInstanceState(Bundle outState) {        // TODO Auto-generated method stub        super.onSaveInstanceState(outState);        //通过键值对的形式，将数据保存下来        outState.putInt("xueLiang", xueLiang);        Toast.makeText(MainActivity.this, "应用出现意外，保存了数据", 0).show();    }}
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