has been working on custom controls for Android recently. for example, when you customize the navigation bar, you can: first define a navigation item containing pictures and text After , use the package name in the main navigate view, set each item...
follow the tutorial: https: github.com flutter fl... step to introduce flutter into an existing project in the completion step: : ERROR: Could not find method testImplementation() for arguments [junit:junit:4.12] on object of type org.gradle.api....
webapp, written by myself on an Android phone, pressing the back button once will exit app, and return to the desktop, instead of like native app, there will be a prompt, such as "press to exit the application again ", but there is still no fallback ef...
because I am an individual developer, which application market APP does not need soft work? ...
the resolution of the picture is 300cm 500, and the coordinate of a point in it is (100100). When the picture is enlarged to 1080mm 1920, how much should the original (100100) coordinate be converted to ...
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= problem description each image can be clicked, and the whole column can be slided. when you slide, there will be ups and downs. The number of image is uncertain, and seven are displayed on the full screen (there is a phenomenon of displayin...
where the request code > 0, standard mode, 7.0 (real machine), 8.0 (virtual machine) can. private void installApp() { Intent intent = new Intent(Intent.ACTION_VIEW); File file = new File(appTask.path); textAppProgressStatus.setT...
the requirement is that the backend gives a simple video playback page to play the video resources included in the webview page. I would like to ask the gods whether there is any way to make the local video resources also play in the web pages displaye...
how can I make dialog global so that all activity can be used? I put dialog initialization in the parent class, but I get an error: android.view.WindowManager$BadTokenException: Unable to add window-- token android.os.BinderProxy@978279 is not valid;...
A 2-tier json, is used in the project. Now there is a search function. Searching Filter according to the username field in the second-tier json is a search function. If there is matching data in the second layer, it will show the first layer and the sec...
ask the bosses, how to check the state changes of the system under linux? For example, the process with pid a starts to run when xxx.xxx s, and when xxx.xxx s starts to occupy cpu, to run xxx.xxx s, due to waiting for io or running out of time slices, i...
in regular expressions, the question mark can represent a quantifier, 0 or 1, or a non-greedy pattern. What is the meaning of the second question mark in the following regular expressions? ".*?(?= ")" g this rule matches everything ...
want to understand a problem, that is, the principle of domain name resolution, is there any easy-to-understand explanation? for example, when I use PHPstudy to develop a website, I don t have a DNS service locally, but after configuring a virtual ho...
after downloading node-notifier, execute, npm run dev and report an error Callback was already called,. Has anyone ever encountered such a problem? solve ~ ....