Android 中 onSaveInstanceState()使用方法详解

覆盖onSaveInstanceState方法，并在onCreate中检测savedInstanceState和获取保存的值

@Override 
protected void onSaveInstanceState(Bundle outState) {  
  outState.putInt("currentposition", videoView.getCurrentPosition()); 
  super.onSaveInstanceState(outState); 
} 

public void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.main);  

  initView(); 

  if (savedInstanceState != null 
      && savedInstanceState.getInt("currentposition") != 0) { 

    videoView.seekTo(savedInstanceState.getInt("currentposition")); 
  } 
} 

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