视频无法播放的原因

一、安卓版本太高

1.添加该布局，忽略其访问

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <base-config cleartextTrafficPermitted="true"/>
</network-security-config>

2.在清单文件中添加该布局即可

android:networkSecurityConfig="@xml/network_security_config"

3.内容位置

    (1).布局文件位置<br />![image.png](https://cdn.nlark.com/yuque/0/2021/png/1574587/1616147375104-d9b86b83-8761-413b-aa5d-efbe80ae5096.png#align=left&display=inline&height=531&margin=%5Bobject%20Object%5D&name=image.png&originHeight=531&originWidth=970&size=63908&status=done&style=none&width=970)<br />        (2).清单文件位置<br />![image.png](https://cdn.nlark.com/yuque/0/2021/png/1574587/1616147450234-3df7d167-88ca-46fd-b3bd-745e19449020.png#align=left&display=inline&height=536&margin=%5Bobject%20Object%5D&name=image.png&originHeight=536&originWidth=1147&size=108240&status=done&style=none&width=1147)

二、清单文件中权限无添加

private final int REQUEST_EXTERNAL_STORAGE = 1;
private String[] PERMISSIONS_STORAGE = {
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE 
    };
   public  void verifyStoragePermissions(Activity activity) {
    // Check if we have write permission
    int permission = ActivityCompat.checkSelfPermission(activity,
            Manifest.permission.WRITE_EXTERNAL_STORAGE);
    if (permission != PackageManager.PERMISSION_GRANTED) {
        // We don't have permission so prompt the user
        ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,
                REQUEST_EXTERNAL_STORAGE);
    }
}

三、sdk过高