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Ensure you can't set null values in DefaultValueLiveData.

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This commit is contained in:
Greyson Parrelli 2020-04-30 12:52:04 -04:00
parent 3b601896d2
commit a2de8a2a05
1 changed files with 14 additions and 0 deletions
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app/src/main/java/org/thoughtcrime/securesms/util/DefaultValueLiveData.java
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@ -3,6 +3,8 @@ package org.thoughtcrime.securesms.util;
import androidx.annotation.NonNull; import androidx.annotation.NonNull;
import androidx.lifecycle.MutableLiveData; import androidx.lifecycle.MutableLiveData;
import org.whispersystems.libsignal.util.guava.Preconditions;
/** /**
* Helps prevent all the @Nullable warnings when working with LiveData. * Helps prevent all the @Nullable warnings when working with LiveData.
*/ */
@ -15,6 +17,18 @@ public class DefaultValueLiveData<T> extends MutableLiveData<T> {
this.defaultValue = defaultValue; this.defaultValue = defaultValue;
} }
@Override
public void postValue(@NonNull T value) {
Preconditions.checkNotNull(value);
super.postValue(value);
}
@Override
public void setValue(@NonNull T value) {
Preconditions.checkNotNull(value);
super.setValue(value);
}
@Override @Override
public @NonNull T getValue() { public @NonNull T getValue() {
T value = super.getValue(); T value = super.getValue();