PermissionUtils

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;
    }

}

 使用:

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
            );
        }
    }


}

 

posted on 2018-01-11 16:18  LoaderMan  阅读(1218)  评论(0编辑  收藏  举报

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