选择本地图片并转化成bitmap

Intent intent=new Intent();

intent.type("image/*");

intent.setAction(Intent.ACTION_GET_CONTENT);

starActivityForResult(intent,1);

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

// TODO Auto-generated method stub

super.onActivityResult(requestCode, resultCode, data);

if (resultCode == RESULT_OK) {

try {

Uri uri = data.getData();

bitmap = null;

ContentResolver resolver = getContentResolver();

bitmap = BitmapFactory.decodeStream(resolver

.openInputStream(uri));

int width = bitmap.getWidth();

int height = bitmap.getHeight();

float scal = 100 / (float) width;

if (width >= 100) {

Matrix matrix = new Matrix();

matrix.postScale(scal, scal);

pickBitmap = Bitmap.createBitmap(bitmap, 0, 0, width,

height, matrix, true);

bitmap.recycle();// 回收Bitmap的空间

} else {

bitmap = pickBitmap;

}

image_photo.setImageBitmap(pickBitmap);

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}