change-avatar.md

选择本地图片，更换头像

private void changeAvatar() {
       Intent intent=new Intent();
       /* 开启Pictures画面Type设定为image */ 
       intent.setType("image/*");
       intent.setAction(Intent.ACTION_GET_CONTENT);
       startActivityForResult(intent,1);
   }
   @Override
   public void onActivityResult(int requestCode, int resultCode, Intent data) {
       switch (resultCode) {
           case -1:
               Uri uri=data.getData();
               ContentResolver cr=getContext().getContentResolver();
               Bitmap bitmap= null;
               try {
                   bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri));
               } catch (FileNotFoundException e) {
                   e.printStackTrace();
               }
               /*
               1、iv.setImageBitmap(Bitmap bmp);传入参数为Bitmap
               2、iv.setImageDrawable(Drawable able);传入参数为 BitmapDrawable；
               3、iv.setImageResource(int rid); 传入参数为图片资源ID                */
               
               //<a href="http://blog.csdn.net/hezhipin610039/article/details/7899248">drawable和bitmap互换的方法</a>
               Drawable drawable=new BitmapDrawable(bitmap);
               ((CircleImageView)v.findViewById(R.id.avatar)).setImageDrawable(drawable);
               break;
           default:
               break;

       }
   }
   ```