OnProgressUpdate cant SetText in TextView

Question

protected Long doInBackground(String... address) {
            while(true){
                try {
                    Thread.sleep(5000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                setProgress(100);
                onProgressUpdate(getping(address[0]));
            }
        }    

protected void onProgressUpdate(Long... values){
                result.setText(String.valueOf(values[0]));
                builder.setContentText(String.valueOf(values[0]));
                notificationManager.notify(1,builder.build());
            }

This chunk works fine on Android Oreo and above but fails to set text on any version below

LOG CAT:-

11-05 16:18:26.041 4720-4752/com.pcartistofficial.pingtesterforgames E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1 Process: com.pcartistofficial.pingtesterforgames, PID: 4720 java.lang.RuntimeException: An error occured while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:304) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355) at java.util.concurrent.FutureTask.setException(FutureTask.java:222) at java.util.concurrent.FutureTask.run(FutureTask.java:242) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) at java.lang.Thread.run(Thread.java:818) Caused by: android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:6357) at android.view.ViewRootImpl.invalidateChildInParent(ViewRootImpl.java:909) at android.view.ViewGroup.invalidateChild(ViewGroup.java:4690) at android.view.View.invalidateInternal(View.java:11801) at android.view.View.invalidate(View.java:11765) at android.view.View.invalidate(View.java:11749) at android.widget.TextView.checkForRelayout(TextView.java:6858) at android.widget.TextView.setText(TextView.java:4057) at android.widget.TextView.setText(TextView.java:3915) at android.widget.TextView.setText(TextView.java:3890) at com.pcartistofficial.pingtesterforgames.MainActivity$BackgroundTasker.onProgressUpdate(MainActivity.java:96) at com.pcartistofficial.pingtesterforgames.MainActivity$BackgroundTasker.doInBackground(MainActivity.java:90) at com.pcartistofficial.pingtesterforgames.MainActivity$BackgroundTasker.doInBackground(MainActivity.java:67) at android.os.AsyncTask$2.call(AsyncTask.java:292) at java.util.concurrent.FutureTask.run(FutureTask.java:237) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) at java.lang.Thread.run(Thread.java:818)

The error says "Only the original thread that created a view hierarchy can touch its views". It means you are trying to access a view from non-ui thread, probably in doInBackground method — Emil
@Emil but it works fine on Android Oreo +. With the same exact code. — Zeeshan Mustafa
Btw the issuing command is onProgressUpdate(2) called from withen doInBackground() . How do i modify so it can work for versions before too — Zeeshan Mustafa
Its better to put ur doinbackground method code also.Because it shows the error in that method only. — SIVAKUMAR.J

Royi Royi · Accepted Answer · 2019-11-05T12:18:04

I assume that you call this method directly in doInBackground method cause this exception. Instead, try to call publishProgress({your values}) in doInBackground method which calls onProgressUpdate method

Reference to AsyncTask API documentation

OnProgressUpdate cant SetText in TextView

1 Answers