[移动开发]动态申请权限

动态申请权限

提示：Android 6.0也就是API等级23之后，获取权限需要动态申请，否则程序无法正常使用。

前言

提示Android6.0动态申请权限

提示：以下是本篇文章正文内容，下面案例可供参考

一、静态申请？

示例：

<!-- 相机权限 -->
<uses-permission android:name="android.permission.CAMERA" />
<!-- 录音权限 -->
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<!-- 读写权限 -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

二、使用步骤

代码如下（示例）：

  /**
     * 获取读写权限
     */
    fun readWritePermissions() {
        val PERMISSION_M = arrayOf(
            Manifest.permission.RECORD_AUDIO,
            Manifest.permission.READ_EXTERNAL_STORAGE,
            Manifest.permission.READ_CONTACTS,
            Manifest.permission.WRITE_EXTERNAL_STORAGE
        )
        //Android 6.0开始的动态权限，这里进行版本判断
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val mPermissionList =
                ArrayList<String>()
            for (i in PERMISSION_M.indices) {
                if (ContextCompat.checkSelfPermission(
                        this,
                        PERMISSION_M.get(i)
                    )
                    != PackageManager.PERMISSION_GRANTED
                ) {
                    mPermissionList.add(PERMISSION_M.get(i))
                }
            }
            if (mPermissionList.isEmpty()) {
            } else {
                //请求权限方法
                val permissionsNew =
                    mPermissionList.toTypedArray() //将List转为数组
                ActivityCompat.requestPermissions(
                    this,
                    permissionsNew,
                    0
                ) //这个触发下面onRequestPermissionsResult这个回调
            }
        }
        }

  private static String[] PERMISSION_M = {
            Manifest.permission.RECORD_AUDIO,
            Manifest.permission.READ_EXTERNAL_STORAGE,
            Manifest.permission.READ_CONTACTS,
            Manifest.permission.WRITE_EXTERNAL_STORAGE
    };

 public void addPermissByPermissionList(Activity activity) {
        //Android 6.0开始的动态权限，这里进行版本判断
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            ArrayList<String> mPermissionList = new ArrayList<>();
            for (int i = 0; i < PERMISSION_M.length; i++) {
                if (ContextCompat.checkSelfPermission(activity, PERMISSION_M[i])
                        != PackageManager.PERMISSION_GRANTED) {
                    mPermissionList.add(PERMISSION_M[i]);
                }
            }
            if (mPermissionList.isEmpty()) {
            } else {
                //请求权限方法
                String[] permissionsNew = mPermissionList.toArray(new String[mPermissionList.size()]);//将List转为数组
                ActivityCompat.requestPermissions(activity, permissionsNew, 0); //这个触发下面onRequestPermissionsResult这个回调
            }
        }
    }