Button [isEnabled] Android crash.

[juanpicuervo]

Version tns-android: 6.2.0

Button [isEnabled] is crashing in android.

<Button text="Login" (tap)="login()" [isEnabled]="isEnabled()" class="my-button"></Button>

System.err: Caused by: java.lang.Exception: Failed resolving method setEnabled on class android.widget.TextView

[vmutafov]

Hi! Could you send a sample application which has this issue? Also, did you try changing only the android runtime version to 6.1.0 in order to see if the problem is indeed in the runtime?

[jscti]

I had the same android crash problem with :

// TS: list = [];

// Template : <Button [isEnabled]="list.length" text="label"></Button>

And I fixed it by using !!list.length or list.length > 0 which is a bit weird .. list.length should totally work

[jonathan-giardino]

Same issue:

<Button v-if="questionType === 'textarea'" backgroundColor="#67a7c4" color="#FFFFFF" height="48" width="auto" padding="0 28" fontSize="16" class="tcmg-button mb-3" text="Check it out" :isEnabled="canSubmitTextArea" @tap="handleAnswerSelected()" ></Button>

Works like a charm in iOS but crashed in Android.

Anyone knows how to fix this?

[ganoraa]

Also me I had the same issue but I solved it assign an initial value to the boolean ( don't ask me why ). So to be clear : public myBool: boolean; --> go in crash ( java.lang.Exception: Failed resolving method setEnabled on class android.widget.TextView ) public myBool = false; --> it works !

[SergeyMell]

It's not about the initial value actually. isEnabled should receive strictly boolean. So instead of using [isEnabled]="someData" please use at least [isEnabled]="!!someData" and it will work correctly

[jscti]

The !! should be done internally in the directive.

Like in js/ts if (array.length) is correct and doesn't need an explicit boolean if (array.length > 0)

[SergeyMell]

I agree. This just how I see it works now

[AdamAtri]

/**
 * Fix bug in {N} button implementation by explicitly
 * casting value as boolean
*/
(function fixButton(): void {
  if (isIOS) return;
  function fixedIsEnabled(value: any) {
    //console.log('fixedIsEnabled', value, Boolean(value));
    this.nativeView?.setEnabled(!!value);
  }
  Button.prototype[isEnabledProperty.setNative] = fixedIsEnabled;
})();