Android修改开机画面

package com.checkoo.activity; import java.io.IOException; import java.io.InputStream; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class DeskdrawableActivity extends Activity { private Button button; private InputStream is; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); button = (Button)this.findViewById(R.id.button); button.setText("change the desk"); button.setOnClickListener(new OnClickListener(){ @Override public void onClick(View v) { is = getBaseContext().getResources().openRawResource(R.drawable.zhouxun); try{ setWallpaper(is); }catch(Exception e){ e.printStackTrace(); } } }); } public void setWallpaper(InputStream data) throws IOException { super.setWallpaper(data); } }