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我非常抱歉，如果這可能是一個簡單的解決方案的問題。捕獲圖像，上傳到Firebase並檢索Java Android Studio
我該怎麼做？
- 捕獲來自按鈕
- 圖像上載圖像火力地堡存儲
- 檢索圖像中的ImageView的
什麼是我的麻煩這麼遠？
- 拍照，但當我點擊打勾時崩潰。
- 因此沒有上傳或正在實現。
我的代碼
P.N我已經看過很多其他論壇和視頻教程，但沒有的似乎是工作。希望有人能幫助。
public class LeaderboardActivity extends AppCompatActivity {
private static final int CAMERA_REQUEST_CODE = 1;
private static final int REQUEST_TAKE_PHOTO = 1;
private StorageReference mStorage;
private ProgressDialog mProgress;
String mCurrentPhotoPath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_leaderboard);
mStorage = FirebaseStorage.getInstance().getReference();
final Button bImage = (Button) findViewById(R.id.bCamera);
final ImageView ivPic = (ImageView) findViewById(R.id.ivPic);
mProgress = new ProgressDialog(this);
bImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, CAMERA_REQUEST_CODE);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK) {
mProgress.setMessage("Uploading Image");
mProgress.show();
Uri uri = data.getData();
StorageReference filepath = mStorage.child("Photo").child(uri.getLastPathSegment());
filepath.putFile(uri).addOnSuccessListener(new OnSuccessListener <UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
mProgress.dismiss();
Toast.makeText(LeaderboardActivity.this, "Uploading Complete...", Toast.LENGTH_LONG);
}
});
}
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(this,
"com.example.android.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
}
}
}
}
錯誤在Android的監視器
不知道這將有助於
02-13 02:30:32.693 2133-2133/com.example.rikhi.chores E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.rikhi.chores, PID: 2133
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.example.rikhi.chores/com.example.rikhi.chores.LoginRegister.InsideMainActivity.LeaderboardActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.getLastPathSegment()' on a null object reference
at android.app.ActivityThread.deliverResults(ActivityThread.java:4089)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4132)
at android.app.ActivityThread.-wrap20(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1533)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.getLastPathSegment()' on a null object reference
at com.example.rikhi.chores.LoginRegister.InsideMainActivity.LeaderboardActivity.onActivityResult(LeaderboardActivity.java:74)
at android.app.Activity.dispatchActivityResult(Activity.java:6932)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4085)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4132)
at android.app.ActivityThread.-wrap20(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1533)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
我已經看過其他人誰有同樣的問題，然後他們說什麼happend，其次谷歌Android的說明，這又是同樣的問題。
我不使用firebase，但使用AsyncHttpClient將HTTP上傳請求上傳到服務器非常簡單 –
不幸的是，我剛剛開始使用Android Studio，並且已經創建了登錄數據庫而試圖讓這個工作起作用的用戶是XD的最後一步，但是謝謝你不好意思看一下 –