Android6.0网络权限管理

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Android 6.0 Marshmallow（棉花糖）是目前谷歌公布的最新版本的操作系统，其中一项改进是针对程序调用权限控制又进一步升级。
在之前的Android系统中，用户在安装应用时会收到一堆权限申请，比如允许应用访问相册、位置、通讯录等等。但是用户一般都会忽视这些直接全盘接受安装。
到了Android 5.0时代，用户可以在设置选项中对每个授权许可进行开启/关闭，比如你不希望你的短信应用获取你的地理信息，那么你可以在新设置页面中关闭这一选项。

而在Android 6.0 Marshmallow中，用户在安装应用时并不需要受到这些提示的骚扰，只有在首次打开、使用过程中实际用到哪些权限才会向收到申请授权的提醒。这一点和现在的iOS非常相像。而且开发者还可以自定义网络权限提示框。

先判断是否已经授权permissionlist，在没有授权的里面检查被用户勾选不再提醒的权限permissionNeed

final private int REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS = 124;  private void insertDummyContactWrapper() {    List<String> permissionsNeeded = new ArrayList<String>();      final List<String> permissionsList = new ArrayList<String>();    if (!addPermission(permissionsList, Manifest.permission.ACCESS_FINE_LOCATION))        permissionsNeeded.add("GPS");    if (!addPermission(permissionsList, Manifest.permission.READ_CONTACTS))        permissionsNeeded.add("Read Contacts");    if (!addPermission(permissionsList, Manifest.permission.WRITE_CONTACTS))        permissionsNeeded.add("Write Contacts");      if (permissionsList.size() > 0) {        if (permissionsNeeded.size() > 0) {            // Need Rationale            String message = "You need to grant access to " + permissionsNeeded.get(0);            for (int i = 1; i < permissionsNeeded.size(); i++)                message = message + ", " + permissionsNeeded.get(i);            showMessageOKCancel(message,                    new DialogInterface.OnClickListener() {                        @Override                        public void onClick(DialogInterface dialog, int which) {                            requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),                                    REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);                        }                    });            return;        }        requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),                REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);        return;    }      insertDummyContact();}  private boolean addPermission(List<String> permissionsList, String permission) {    if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {        permissionsList.add(permission);        // Check for Rationale Option        if (!shouldShowRequestPermissionRationale(permission))            return false;    }    return true;}

用户处理权限后回调activity中的onRequestPermissionResult方法

@Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {    switch (requestCode) {        case REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS:            {            Map<String, Integer> perms = new HashMap<String, Integer>();            // Initial            perms.put(Manifest.permission.ACCESS_FINE_LOCATION, PackageManager.PERMISSION_GRANTED);            perms.put(Manifest.permission.READ_CONTACTS, PackageManager.PERMISSION_GRANTED);            perms.put(Manifest.permission.WRITE_CONTACTS, PackageManager.PERMISSION_GRANTED);            // Fill with results            for (int i = 0; i < permissions.length; i++)                perms.put(permissions[i], grantResults[i]);            // Check for ACCESS_FINE_LOCATION            if (perms.get(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED                    && perms.get(Manifest.permission.READ_CONTACTS) == PackageManager.PERMISSION_GRANTED                    && perms.get(Manifest.permission.WRITE_CONTACTS) == PackageManager.PERMISSION_GRANTED) {                // All Permissions Granted                insertDummyContact();            } else {                // Permission Denied                Toast.makeText(MainActivity.this, "Some Permission is Denied", Toast.LENGTH_SHORT)                        .show();            }            }            break;        default:            super.onRequestPermissionsResult(requestCode, permissions, grantResults);    }}

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