![](/img/trans.png)
[英]Android drawable appears stretched for API <23 and correctly for API 23 and above
[英]Upload image to server from android Api 23 and above
我希望我的应用程序从Android库中选择一个图像并在服务器上上传。 并且代码在API lenel 22即棒棒糖上运行良好。 但是在API级别23上出现NullPointerException失败 。 API 23之后有什么变化吗? 如果是这样的话。
这是我使用的代码。
public void onClickAddProfileImage(View v) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(intent, PICK_PROFILE_PHOTO);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_PROFILE_PHOTO && resultCode == Activity.RESULT_OK) {
uploader.setVisibility(View.VISIBLE);
Uri selectedImage = data.getData();
String[] projection = {MediaStore.Images.Media.DATA};
CursorLoader loader = new CursorLoader(this, selectedImage, projection, null, null, null);
Cursor cursor = loader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
Uri imageUri = Uri.parse(cursor.getString(column_index));
cursor.close();
Intent in = new Intent();
UploadFile file_upload = new UploadFile(this, in);
file_upload.execute();
}
}
我上线的错误日志
Uri imageUri = Uri.parse(cursor.getString(column_index));
是
Process: com.webkul.taskapp, PID: 2648 java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://com.android.providers.media.documents/document/image:205520 flg=0x1 }} to activity {com.webkul.taskapp/com.webkul.taskapp.BaseActivity}: java.lang.NullPointerException: uriString
at android.app.ActivityThread.deliverResults(ActivityThread.java:3720)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3763)
at android.app.ActivityThread.-wrap16(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1403)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
Caused by: java.lang.NullPointerException: uriString
at android.net.Uri$StringUri.<init>(Uri.java:475)
at android.net.Uri$StringUri.<init>(Uri.java)
at android.net.Uri.parse(Uri.java:437)
at com.webkul.taskapp.BaseActivity.onActivityResult(BaseActivity.java:535)
at android.app.Activity.dispatchActivityResult(Activity.java:6442)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3716)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3763)
at android.app.ActivityThread.-wrap16(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1403)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5443)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
请任何人提出任何建议来解决它。
有很多代码,你试图从...开始构建一个Uri。
data.geData()
是已经可以用来打开InputStream
来上传文件的Uri。
我遇到了这个问题但是通过使用这个第三方库来解决它
https://github.com/sangcomz/FishBun
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.