android-bitmap创建设置图片

bitmap创建设置图片

package zhang.decodeFile;

import java.io.File;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

public class decodeFile extends Activity {
	private ImageView mImageView;
	private Button mButton;
	private TextView mTextView;
	private String fileName="/data/q2.jpg";
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        mButton = (Button)findViewById(R.id.button1);
        mButton.setOnClickListener(new Button.OnClickListener(){

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				mImageView=(ImageView)findViewById(R.id.imageView1);
				mTextView=(TextView)findViewById(R.id.TextView1);
				
				File f =  new File(fileName);
				if(f.exists()){
					Bitmap bm = BitmapFactory.decodeFile(fileName);
					mImageView.setImageBitmap(bm);
					mTextView.setText(fileName);
			}else{
				mTextView.setText(fileName+"no");
			}
        	
        }
			});
        }
}