android onSaveInstanceState的使用方法

androidonSaveInstanceState的使用方法

(2011-03-16 10:18:30)

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杂谈

分类：技术

package com.saveInstanceDemo.src; import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log; public class saveInstanceDemo extends Activity {

private static final String TAG = "MyNewLog";
private int mCount = 0;
private boolean mThreadDisble;
@Override
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
// If an instance of this activity had previously stopped, we can
// get the original text it started with.
if(null != savedInstanceState)
{
int IntTest = savedInstanceState.getInt("IntTest");
String StrTest = savedInstanceState.getString("StrTest");
Log.e(TAG, "onCreate get the savedInstanceState+IntTest="+IntTest+"+StrTest="+StrTest);
}
setContentView(R.layout.main);

new Thread(new Runnable()
{
@Override
public void run() {
// TODO Auto-generated method stub

while(true)
{
if(!mThreadDisble)
{
Log.v(TAG, Boolean.toString(mThreadDisble));
try{
Thread.sleep(1000);
}
catch(Exception e)
{
e.printStackTrace();
}
mCount++;
Log.v(TAG, "mCount : " + mCount);
}
}
}
}).start();

Log.e(TAG, "onCreate");
} @Override
//为了防止万一程序被销毁的风险，这个方法可以保证重要数据的正确性
//不写这个方法并不意味着一定出错，但是一旦遇到了一些非常奇怪的数据问题的时候
//可以看看是不是由于某些重要的数据没有保存，在程序被销毁时被重置
public void onSaveInstanceState(Bundle savedInstanceState) {
// Save away the original text, so we still have it if the activity
// needs to be killed while paused.
savedInstanceState.putInt("IntTest", mCount);
savedInstanceState.putString("StrTest", "savedInstanceState test");
super.onSaveInstanceState(savedInstanceState);
Log.e(TAG, "onSaveInstanceState");
} @Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
int mCount = savedInstanceState.getInt("IntTest");
String StrTest = savedInstanceState.getString("StrTest");
Log.e(TAG, "onRestoreInstanceState+IntTest="+mCount+"+StrTest="+StrTest);
}

public void onDestroy()
{
super.onDestroy();
this.mThreadDisble = true;
}

public void onPause()
{
Log.v(TAG, "onPause");
super.onPause();
mThreadDisble = true;
}

public void onResume()
{
Log.v(TAG, "onResume");
super.onResume();
mThreadDisble = false;
}
}

androidonSaveInstanceState的使用方法

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