어디가 잘못됬는지 모르겠네요....

고수님들의 조언 부탁드립니다...

컴파일은 잘 됩니다.논리적인 버그가 많은 것 같습니다...

package com.Wallpaper;

import android.app.Activity;
import android.app.WallpaperManager;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.graphics.drawable.Drawable;
import android.widget.Button;
import android.widget.ImageView;
import java.io.FileInputStream;

public class Wallpaper extends Activity {
    /** Called when the activity is first created. */
   
 String savedFileName = "d:\\workspace_Android\\Wallpaper\\best.png";
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.wallpaper_02);
   
        final WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
        final Drawable wallpaperDrawable = wallpaperManager.getDrawable();
        final ImageView imageView = (ImageView) findViewById(R.id.imageview);
        imageView.setDrawingCacheEnabled(true);
        imageView.setImageDrawable(wallpaperDrawable);
 
        Button setWallpaper = (Button) findViewById(R.id.button01);
        setWallpaper.setOnClickListener(new OnClickListener(){
         public void onClick(View view){
          try {
        
           wallpaperManager.setBitmap( imageView.getDrawingCache());
           wallpaperManager.setStream(new FileInputStream(savedFileName));
           finish();
           
          }catch (Exception e){
           e.printStackTrace();
          }
         }
        });
 }
}