Android獲取本地圖片并顯示

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);  
            /* 開啟Pictures畫面Type設定為image */    
            intent.setType("image/*");    
            /* 使用Intent.ACTION_GET_CONTENT這個Action */    
            intent.setAction(Intent.ACTION_GET_CONTENT);     
            /* 取得相片后返回本畫面 */    
            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(), "上傳成功",  
                    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;

//  }
}  </pre>