android 选择手机图库，实现修改个人资料，头像上传功能，可直接使用

效果图

/**
* 打开系统相册
*/
private void headIconDialog() {
Intent openAlbumIntent = new Intent(Intent.ACTION_GET_CONTENT);
openAlbumIntent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
startActivityForResult(openAlbumIntent, PHOTOZOOM);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Uri uri = null;
Intent intent = null;
switch (requestCode) {
case PHOTOZOOM:// 相册
if (resultCode != RESULT_OK) {
return;
}
if (data == null) {
return;
}
uri = data.getData();
Bitmap userbitmap = MyBitmapUtils.decodeUriAsBitmap(this, uri);
if (userbitmap == null) {//这里用于校验图片是否有误（可能是破损图）
MyToastUtils.showShortToast(getApplicationContext(), "图片有误，请重新选择！");
return;
}
File user_head = MyBitmapUtils.saveBitmap(MyBitmapUtils.zoomImgKeepWH(userbitmap, 400, 400, true), "user_head.jpeg");
intent = new Intent(this, CropImageAct.class);
intent.putExtra("path", Environment.getExternalStorageDirectory() + "/" + "user_head.jpeg");
MyLogUtils.info("拍照图片地址是：" + Environment.getExternalStorageDirectory() + "/" + "user_head.jpeg");
startActivityForResult(intent, IMAGE_COMPLETE);
break;
case IMAGE_COMPLETE:// 完成
if (data != null) {
String temppath = data.getStringExtra("path");
//                    toloadfile(temppath);//这里上传头像到后台接口
final Bitmap bitmap = BitmapFactory.decodeFile(temppath);
iv.setImageBitmap(bitmap);
MyLogUtils.info(data + "裁剪完成地址。。。。");
}

break;
}
}