Why does my vibration on Android not work?

Question

I've added vibration to my app and it never runs. I've definitely got the permission. This prints YAWP!!!

int x = PermissionChecker.checkSelfPermission(this, "android.permission.VIBRATE");
if (x != PermissionChecker.PERMISSION_GRANTED) {
    Log.d(TAG, "Vibrate? ACK!!!");
} else {
    Log.d(TAG, "Vibrate? YAWP!!!");
}

Here's my triggering code.

        Vibrator v = (Vibrator) getSystemService(VIBRATOR_SERVICE);
        if (v != null) {
            if (Build.VERSION.SDK_INT >= 26) {
                v.vibrate(VibrationEffect.createOneShot(1000, VibrationEffect.DEFAULT_AMPLITUDE));
            } else {
                v.vibrate(1000);
            }
        }

I've also tried:

    private void shakeItBaby() {
        // Get instance of Vibrator from current Context
        Vibrator v = (Vibrator) getSystemService(VIBRATOR_SERVICE);

// Output yes if can vibrate, no otherwise
        if (v.hasVibrator()) {
            Log.v("Can Vibrate", "YES");
        } else {
            Log.v("Can Vibrate", "NO");
        }

//        v.vibrate(VIBRATE_TIME);

        // Start without a delay
// Each element then alternates between vibrate, sleep, vibrate, sleep...
        long[] pattern = {0, 100, 1000, 300, 200, 100, 500, 200, 100};

// The '-1' here means to vibrate once, as '-1' is out of bounds in the pattern array
        v.vibrate(pattern, -1);

    }

I've tried answers from tons and tons of different questions, but nothing helps.

Here's one
Here's another
There are others, but the answers are dulicates.

Other apps vibrate, and buttons vibrate if I turn it on in the system settings. — Ginger McMurray, Dec 25 '19 at 18:08

score 0 · Answer 1 · answered Apr 14 '21 at 22:13

0

I was having the same problem and fixed it by changing Settings->Accessability->Vibration

answered Apr 14 '21 at 22:13

Ian Hern

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Why does my vibration on Android not work?

1 Answers1