使用Java代码在Android Q中删除不属于自己的文件

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
        != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(this,
            new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
            PERMISSION_REQUEST_CODE);
}

String filePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/path/to/file.txt";
File file = new File(filePath);

if (file.exists() && !file.isDirectory()) {
    boolean deleted = file.delete();
    if (deleted) {
        // 文件删除成功
    } else {
        // 文件删除失败
    }
}