FLYSN/app/src/main/java/com/uiui/sn/base/CheckPermissionsActivity.java

/**
 * 
 */
package com.uiui.sn.base;

import android.Manifest;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.Settings;
import android.view.KeyEvent;


import com.uiui.sn.R;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

/**
 * 继承了Activity，实现Android6.0的运行时权限检测
 * 需要进行运行时权限检测的Activity可以继承这个类
 * 
 * @创建时间：2016年5月27日 下午3:01:31 
 * @项目名称： AMapLocationDemo
 * @author hongming.wang
 * @文件名称：PermissionsChecker.java
 * @类型名称：PermissionsChecker
 * @since 2.5.0
 */
public class CheckPermissionsActivity extends Activity {
	//是否需要检测后台定位权限，设置为true时，如果用户没有给予后台定位权限会弹窗提示
	private boolean needCheckBackLocation = false;
	//如果设置了target > 28，需要增加这个权限，否则不会弹出"始终允许"这个选择框
	private static String BACKGROUND_LOCATION_PERMISSION = "android.permission.ACCESS_BACKGROUND_LOCATION";
	/**
	 * 需要进行检测的权限数组
	 */
	protected String[] needPermissions = {
			Manifest.permission.ACCESS_COARSE_LOCATION,
			Manifest.permission.ACCESS_FINE_LOCATION,
			Manifest.permission.WRITE_EXTERNAL_STORAGE,
			Manifest.permission.READ_EXTERNAL_STORAGE,
			Manifest.permission.READ_PHONE_STATE
	};

	private static final int PERMISSON_REQUESTCODE = 0;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		if(Build.VERSION.SDK_INT > 28
				&& getApplicationContext().getApplicationInfo().targetSdkVersion > 28) {
			needPermissions = new String[] {
					Manifest.permission.ACCESS_COARSE_LOCATION,
					Manifest.permission.ACCESS_FINE_LOCATION,
					Manifest.permission.WRITE_EXTERNAL_STORAGE,
					Manifest.permission.READ_EXTERNAL_STORAGE,
					Manifest.permission.READ_PHONE_STATE,
					BACKGROUND_LOCATION_PERMISSION
			};
		}
	}

	/**
	 * 判断是否需要检测，防止不停的弹框
	 */
	private boolean isNeedCheck = true;
	
	@Override
	protected void onResume() {
		super.onResume();
		if (Build.VERSION.SDK_INT >= 23
				&& getApplicationInfo().targetSdkVersion >= 23) {
			if (isNeedCheck) {
				checkPermissions(needPermissions);
			}
		}
	}
	
	/**
	 * 
	 * @param permissions
	 * @since 2.5.0
	 *
	 */
	private void checkPermissions(String... permissions) {
		try {
			if (Build.VERSION.SDK_INT >= 23
					&& getApplicationInfo().targetSdkVersion >= 23) {
				List<String> needRequestPermissonList = findDeniedPermissions(permissions);
				if (null != needRequestPermissonList
						&& needRequestPermissonList.size() > 0) {
					String[] array = needRequestPermissonList.toArray(new String[needRequestPermissonList.size()]);
					Method method = getClass().getMethod("requestPermissions", new Class[]{String[].class,
							int.class});

					method.invoke(this, array, PERMISSON_REQUESTCODE);
				}
			}
		} catch (Throwable e) {
		}
	}

	/**
	 * 获取权限集中需要申请权限的列表
	 * 
	 * @param permissions
	 * @return
	 * @since 2.5.0
	 *
	 */
	private List<String> findDeniedPermissions(String[] permissions) {
		List<String> needRequestPermissonList = new ArrayList<String>();
		if (Build.VERSION.SDK_INT >= 23
				&& getApplicationInfo().targetSdkVersion >= 23){
			try {
				for (String perm : permissions) {
					Method checkSelfMethod = getClass().getMethod("checkSelfPermission", String.class);
					Method shouldShowRequestPermissionRationaleMethod = getClass().getMethod("shouldShowRequestPermissionRationale",
							String.class);
					if ((Integer)checkSelfMethod.invoke(this, perm) != PackageManager.PERMISSION_GRANTED
							|| (Boolean)shouldShowRequestPermissionRationaleMethod.invoke(this, perm)) {
						if(!needCheckBackLocation
						  		&& BACKGROUND_LOCATION_PERMISSION.equals(perm)) {
							continue;
						}
						needRequestPermissonList.add(perm);
					}
				}
			} catch (Throwable e) {

			}
		}
		return needRequestPermissonList;
	}

	/**
	 * 检测是否所有的权限都已经授权
	 * @param grantResults
	 * @return
	 * @since 2.5.0
	 *
	 */
	private boolean verifyPermissions(int[] grantResults) {
		for (int result : grantResults) {
			if (result != PackageManager.PERMISSION_GRANTED) {
				return false;
			}
		}
		return true;
	}

	@Override
	@TargetApi(23)
	public void onRequestPermissionsResult(int requestCode,
                                           String[] permissions, int[] paramArrayOfInt) {
		if (requestCode == PERMISSON_REQUESTCODE) {
			if (!verifyPermissions(paramArrayOfInt)) {
				showMissingPermissionDialog();
				isNeedCheck = false;
			}
		}
	}

	/**
	 * 显示提示信息
	 * 
	 * @since 2.5.0
	 *
	 */
	private void showMissingPermissionDialog() {
		AlertDialog.Builder builder = new AlertDialog.Builder(this);
		builder.setTitle(R.string.notifyTitle);
		builder.setMessage(R.string.notifyMsg);

		// 拒绝, 退出应用
		builder.setNegativeButton(R.string.cancel,
				new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {
						finish();
					}
				});

		builder.setPositiveButton(R.string.setting,
				new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {
						startAppSettings();
					}
				});

		builder.setCancelable(false);

		builder.show();
	}

	/**
	 *  启动应用的设置
	 * 
	 * @since 2.5.0
	 *
	 */
	private void startAppSettings() {
		Intent intent = new Intent(
				Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
		intent.setData(Uri.parse("package:" + getPackageName()));
		startActivity(intent);
	}
	
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		if(keyCode == KeyEvent.KEYCODE_BACK){
			this.finish();
			return true;
		}
		return super.onKeyDown(keyCode, event);
	}
		
}