获取本地图片并显示

package com.example.showgetpic;

import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Base64;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;

public class MainActivity extends Activity {
	private ImageView iv;
	private OnClickListener imgViewListener;
	private Bitmap myBitmap;
	private int REQUEST_OK = 1;
	private LinearLayout ly_list;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		iv = (ImageView) findViewById(R.id.iv);
		ly_list=(LinearLayout) findViewById(R.id.ly_list);
		iv.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				Intent intent = new Intent();  
				//intent = new Intent(Intent.ACTION_GET_CONTENT);
                /* 开启Pictures画面Type设定为image */  
                intent.setType("image/*");  
                /* 使用Intent.ACTION_GET_CONTENT这个Action */  
                intent.setAction(Intent.ACTION_GET_CONTENT);   
                /* 取得相片后返回本画面 */  
                startActivityForResult(intent, 1);  

			}
		});
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// TODO Auto-generated method stub
		if (requestCode	 == REQUEST_OK) {
			Uri selectedImage = data.getData();
			try {
				Bitmap bitmap = BitmapFactory.decodeStream(this
						.getContentResolver().openInputStream(Uri.parse(selectedImage.toString())));
				iv.setImageBitmap(bitmap);
				Toast.makeText(getApplicationContext(), "上传成功",
						Toast.LENGTH_SHORT).show();
			} catch (FileNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		super.onActivityResult(requestCode, resultCode, data);
	}

//	public static Bitmap getPicFromBytes(byte[] bytes,
//			BitmapFactory.Options opts) {
//		if (bytes != null)
//			if (opts != null)
//				return BitmapFactory.decodeByteArray(bytes, 0, bytes.length,
//						opts);
//			else
//				return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
//		return null;
//	}
//
//	public static byte[] readStream(InputStream in) throws Exception {
//		byte[] buffer = new byte[1024];
//		int len = -1;
//		ByteArrayOutputStream outStream = new ByteArrayOutputStream();
//
//		while ((len = in.read(buffer)) != -1) {
//			outStream.write(buffer, 0, len);
//		}
//		byte[] data = outStream.toByteArray();
//		outStream.close();
//		in.close();
//		return data;
//	}

}