import android.annotation.TargetApi;

import android.app.Activity;

import android.content.Context;

import android.content.pm.PackageManager;

import android.os.Build;

import android.support.v4.content.ContextCompat;

import java.util.ArrayList;

import java.util.List;

/**

 * DESC 6.0 权限工具类

 * Created by douhaoqiang on 2017/2/27.

 */

public class PermissionUtils {

    private static final String TAG = "PermissionUtils";

    private static int mRequestCode = -1;

    private static OnPermissionListener mOnPermissionListener;

    /**

     * 权限请求回调

     */

    public interface OnPermissionListener {

        //权限通过

        void onPermissionGranted();

        //权限拒绝

        void onPermissionDenied();

    }

    /**

     * 调用请求响应的权限

     * @param context     上下文菜单 必须为Activity

     * @param requestCode 请求码

     * @param permissions 请求权限

     * @param listener    权限请求监听

     */

    @TargetApi(Build.VERSION_CODES.M)

    public static void requestPermissions(Context context, int requestCode

            , String[] permissions, OnPermissionListener listener) {

        if (context instanceof Activity) {

            mOnPermissionListener = listener;

            List<String> deniedPermissions = getDeniedPermissions(context, permissions);

            if (deniedPermissions.size() > 0) {

                mRequestCode = requestCode;

                ((Activity) context).requestPermissions(deniedPermissions

                        .toArray(new String[deniedPermissions.size()]), requestCode);

            } else {

                if (mOnPermissionListener != null)

                    mOnPermissionListener.onPermissionGranted();

            }

        } else {

            throw new RuntimeException("Context must be an Activity");

        }

    }

    /**

     * 获取请求权限中需要授权的权限

     */

    private static List<String> getDeniedPermissions(Context context, String... permissions) {

        List<String> deniedPermissions = new ArrayList<>();

        for (String permission : permissions) {

            if (ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_DENIED) {

                deniedPermissions.add(permission);

            }

        }

        return deniedPermissions;

    }

    /**

     * 请求权限结果，对应Activity中onRequestPermissionsResult()方法。

     */

    public static void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

        if (mRequestCode != -1 && requestCode == mRequestCode) {

            if (mOnPermissionListener != null) {

                if (verifyPermissions(grantResults)) {

                    mOnPermissionListener.onPermissionGranted();

                } else {

                    mOnPermissionListener.onPermissionDenied();

                }

            }

        }

    }

    /**

     * 验证所有权限是否都已经授权

     */

    private static boolean verifyPermissions(int[] grantResults) {

        for (int grantResult : grantResults) {

            if (grantResult != PackageManager.PERMISSION_GRANTED) {

                return false;

            }

        }

        return true;

    }

}

public class SplashActivity extends Activity {

    String[] permissions = {

            Manifest.permission.WRITE_EXTERNAL_STORAGE,

            Manifest.permission.ACCESS_FINE_LOCATION,

            Manifest.permission.ACCESS_COARSE_LOCATION,

            Manifest.permission.CAMERA,

            Manifest.permission.RECORD_AUDIO

    };

    @Override

    protected void onCreate(@Nullable Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

                WindowManager.LayoutParams.FLAG_FULLSCREEN);  //全屏

        setContentView(R.layout.activity_splash);

        requestPermissions();

    }

    public void requestPermissions() {

        PermissionUtil.requestPermissions(this, 1, permissions, new PermissionUtil.OnPermissionListener() {

            @Override

            public void onPermissionGranted() {

                startActivity(new Intent(SplashActivity.this, MainActivity.class));

                finish();

            }

            @Override

            public void onPermissionDenied() {

                finish();

            }

        });

    }

    @Override

    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        PermissionUtil.onRequestPermissionsResult(requestCode, permissions, grantResults);

    }

    //隐藏虚拟导航栏按键

    @Override

    public void onWindowFocusChanged(boolean hasFocus) {

        super.onWindowFocusChanged(hasFocus);

        if (hasFocus) {

            getWindow().getDecorView().setSystemUiVisibility(

                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |

                            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY |

                            View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN

            );

        }

    }

}