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加在定义常量中
String[]
permiss={Manifest.permission.CAMERA,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE};
加在需要用在点击事件上
//动态权限 Cameraperssion(); private void Cameraperssion() {
PermissionsUtils.getInstance().chekPermissions(MyDataActivity.this, permiss,
new PermissionsUtils.IPermissionsResult() { @Override public void
passPermissons() { } @Override public void forbitPermissons() { } }); }
PermissionsUtils
public class PermissionsUtils { private final int mRequestCode = 100;//权限请求码
public static boolean showSystemSetting = true; private PermissionsUtils() { }
private static PermissionsUtils permissionsUtils; private IPermissionsResult
mPermissionsResult; public static PermissionsUtils getInstance() { if
(permissionsUtils == null) { permissionsUtils = new PermissionsUtils(); }
return permissionsUtils; } public void chekPermissions(Activity context,
String[] permissions, @NonNull IPermissionsResult permissionsResult) {
mPermissionsResult = permissionsResult; if (Build.VERSION.SDK_INT < 23)
{//6.0才用动态权限 permissionsResult.passPermissons(); return; }
//创建一个mPermissionList，逐个判断哪些权限未授予，未授予的权限存储到mPerrrmissionList中 List<String>
mPermissionList = new ArrayList<>(); //逐个判断你要的权限是否已经通过 for (int i = 0; i <
permissions.length; i++) { if (ContextCompat.checkSelfPermission(context,
permissions[i]) != PackageManager.PERMISSION_GRANTED) {
mPermissionList.add(permissions[i]);//添加还未授予的权限 } } //申请权限 if
(mPermissionList.size() > 0) {//有权限没有通过，需要申请
ActivityCompat.requestPermissions(context, permissions, mRequestCode); } else {
//说明权限都已经通过，可以做你想做的事情去 permissionsResult.passPermissons(); return; } }
//请求权限后回调的方法 //参数： requestCode 是我们自己定义的权限请求码 //参数： permissions 是我们请求的权限名称数组
//参数： grantResults
是我们在弹出页面后是否允许权限的标识数组，数组的长度对应的是权限名称数组的长度，数组的数据0表示允许权限，-1表示我们点击了禁止权限 public void
onRequestPermissionsResult(Activity context, int requestCode, @NonNull String[]
permissions, @NonNull int[] grantResults) { boolean hasPermissionDismiss =
false;//有权限没有通过 if (mRequestCode == requestCode) { for (int i = 0; i <
grantResults.length; i++) { if (grantResults[i] == -1) { hasPermissionDismiss =
true; } } //如果有权限没有被允许 if (hasPermissionDismiss) { if (showSystemSetting) {
showSystemPermissionsSettingDialog(context);//跳转到系统设置权限页面，或者直接关闭页面，不让他继续访问 }
else { mPermissionsResult.forbitPermissons(); } } else { //全部权限通过，可以进行下一步操作。。。
mPermissionsResult.passPermissons(); } } } /** * 不再提示权限时的展示对话框 */ AlertDialog
mPermissionDialog; private void showSystemPermissionsSettingDialog(final
Activity context) { final String mPackName = context.getPackageName(); if
(mPermissionDialog == null) { mPermissionDialog = new
AlertDialog.Builder(context) .setMessage("已禁用权限，请手动授予")
.setPositiveButton("设置", new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) {
cancelPermissionDialog(); Uri packageURI = Uri.parse("package:" + mPackName);
Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
packageURI); context.startActivity(intent); context.finish(); } })
.setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) { //关闭页面或者做其他操作
cancelPermissionDialog(); //mContext.finish();
mPermissionsResult.forbitPermissons(); } }) .create(); }
mPermissionDialog.show(); } //关闭对话框 private void cancelPermissionDialog() { if
(mPermissionDialog != null) { mPermissionDialog.cancel(); mPermissionDialog =
null; } } public interface IPermissionsResult { void passPermissons(); void
forbitPermissons(); } }