Programming VIP

The following GIF diagram shows the layout jump without a picture placeholder: See the full example in DartPad If you have cached a picture placeholder in your app, you can use FadeInImage Widgets to display placeholders.If you want to use a widget instead of a picture as a placeholder, you can use Image.frameBuilder&nbs ...

Does try catch affect program performance? First, try catch is used to minimize the scope as much as possible. When no exception is thrown within the try catch scope, the performance impact is small, but when an exception is thrown, the performance impact is multiplied.Specifically, I have conducted a simple test for the following three cases ...

mExecutorService.submit(new Runnable() { @Override public void run() { AVUtils.audioPlay(input_video_file_path); } }); break; } } @Override public void onFinish() { runOnUiThread(new Runnable() { @Override public vo ...