Home/ Questions/How can I solve the error: only the original thread that created a view hierarchy can touch its views?
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Margarita Cronin
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Asked: 2022-07-21T03:38:48+00:00 In:

How can I solve the error: only the original thread that created a view hierarchy can touch its views?

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It appears this error message: only the original thread that created a view hierarchy can touch its views. And now I am really disappointed after hours searching for a solution to it.

Please help me figure out that problem. Thanks a lot. 

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1 Answer

  1. Best Answer
    Expert

    Solution: To fix only the original thread that created a view hierarchy can touch its views problem, I recommend the ways below:

    Solution 1: The section of the background task that changes the user interface must be moved to the main thread. For this, there is a helpful piece of code:

    runOnUiThread(new Runnable() {

@Override
public void run() {

// Stuff that updates the UI

}
});

    Simply nest this within the function that executes in the background, and then paste any update-implementing code in the block’s middle. Keep the amount of code you provide as minimal as possible to avoid defeating the aim of the background thread.

    Solution 2:

    Add runOnUiThread( new Runnable(){ .. inner run():

    thread = new Thread(){
@Override
public void run() {
try {
synchronized (this) {
wait(5000);

runOnUiThread(new Runnable() {
@Override
public void run() {
dbloadingInfo.setVisibility(View.VISIBLE);
bar.setVisibility(View.INVISIBLE);
loadingText.setVisibility(View.INVISIBLE);
}
});

}
} catch (InterruptedException e) {
e.printStackTrace();
}
Intent mainActivity = new Intent(getApplicationContext(),MainActivity.class);
startActivity(mainActivity);
};
};
thread.start();

     

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