This question is not a duplicate of What is a NullPointerException, and how do I fix it? I have tried many of the answers given there but none worked!
I am trying to add WhatsApp like Recording and Slide to Cancel Animation in my app. For that i used : implementation 'com.github.3llomi:RecordView:3.0.2'. But the code is throwing a Null Pointer Exception:
(java.lang.NullPointerException: Attempt to invoke virtual method 'void com.devlomi.record_view.RecordView.onActionDown(com.devlomi.record_view.RecordButton, android.view.MotionEvent)' on a null object reference).
Can anyone help me solve this null object reference exception?
Java Code:
binding.recordButton.setRecordView(binding.recordView);
binding.recordButton.setListenForRecord(false);
binding.recordView.setOnRecordListener(new OnRecordListener() {
@Override
public void onStart() {
if (!checkPermissionFromDevice()) {
binding.messageBox.setVisibility(View.GONE);
binding.attachment.setVisibility(View.GONE);
binding.camera.setVisibility(View.GONE);
startRecord();
Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
if (vibrator != null) {
vibrator.vibrate(100);
}
} else {
requestPermission();
}
}
@Override
public void onCancel() {
try {
mediaRecorder.reset();
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void onFinish(long recordTime, boolean limitReached) {
binding.messageBox.setVisibility(View.VISIBLE);
binding.attachment.setVisibility(View.VISIBLE);
binding.camera.setVisibility(View.VISIBLE);
try {
sTime = getHumanTimeText(recordTime);
stopRecord();
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void onLessThanSecond() {
binding.messageBox.setVisibility(View.VISIBLE);
binding.attachment.setVisibility(View.VISIBLE);
binding.camera.setVisibility(View.VISIBLE);
}
});
//binding.recordButton.setListenForRecord(false);
//ListenForRecord must be false ,otherwise onClick will not be called
binding.recordButton.setOnRecordClickListener(new OnRecordClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(ChatActivity.this, "RECORD BUTTON CLICKED", Toast.LENGTH_SHORT).show();
Log.d("RecordButton","RECORD BUTTON CLICKED");
}
});
binding.recordView.setOnBasketAnimationEndListener(new OnBasketAnimationEnd() {
@Override
public void onAnimationEnd() {
binding.messageBox.setVisibility(View.VISIBLE);
binding.attachment.setVisibility(View.VISIBLE);
binding.camera.setVisibility(View.VISIBLE);
}
});
XML:
<com.devlomi.record_view.RecordView
android:id="@+id/record_view"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_margin="10dp"
android:gravity="bottom"
app:counter_time_color="#ff0000"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/record_button"
app:layout_constraintStart_toStartOf="parent"
app:slide_to_cancel_arrow="@drawable/recv_ic_arrow"
app:slide_to_cancel_arrow_color="@color/black"
app:slide_to_cancel_bounds="8dp"
app:slide_to_cancel_margin_right="10dp"
app:slide_to_cancel_text="Slide To Cancel" />
<com.devlomi.record_view.RecordButton
android:id="@+id/record_button"
android:layout_width="55dp"
android:layout_height="55dp"
android:layout_margin="6dp"
android:layout_alignParentBottom="true"
android:background="@drawable/recv_bg_mic"
android:scaleType="centerInside"
android:visibility="visible"
android:padding="17dp"
app:layout_constraintBottom_toBottomOf="@+id/record_view"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="@+id/record_view"
app:mic_icon="@drawable/recv_ic_mic_white" />
Logcat:
java.lang.NullPointerException: Attempt to invoke virtual method 'void com.devlomi.record_view.RecordView.onActionDown(com.devlomi.record_view.RecordButton, android.view.MotionEvent)' on a null object reference
at com.devlomi.record_view.RecordButton.onTouch(RecordButton.java:105)
at android.view.View.dispatchTouchEvent(View.java:14441)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3170)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2775)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3170)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2775)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3170)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2775)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3170)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2775)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3170)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2775)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3170)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2775)
at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:575)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1945)
at android.app.Activity.dispatchTouchEvent(Activity.java:4232)
at androidx.appcompat.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:69)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:528)
at android.view.View.dispatchPointerEvent(View.java:14723)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:6463)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:6246)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5707)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5774)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5735)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5897)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5743)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5954)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5711)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5774)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5735)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5743)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5711)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:8551)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:8502)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:8454)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:8691)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:238)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:339)
at android.os.Looper.loop(Looper.java:208)
at android.app.ActivityThread.main(ActivityThread.java:8212)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:626)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1015)
