Android 选择头像

调用Android可用Activity

private void choosePicture() {
       Intent intent = new Intent();
       
       intent.setType("image/*");
       intent.setAction(Intent.ACTION_GET_CONTENT);
       startActivityForResult(intent, REQ_CODE_PICTURES);   
}  

当Activity返回时，会调用以下函数：

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if(resultCode == RESULT_OK) {
        switch(requestCode) {
        case REQ_CODE_CAMERA:
            uploadImage(photoTemp);
            break;
        case REQ_CODE_PICTURES:
            Uri uri = data.getData();
            ContentResolver cr = this.getContentResolver();
            //get the physical path of the image
            Cursor c = cr.query(uri, null, null, null, null);
            c.moveToFirst();
            photoTemp = c.getString(c.getColumnIndex("_data"));
            uploadImage(photoTemp);
            break;
        default:
             break;
        };
    }
    super.onActivityResult(requestCode, resultCode, data);
}