luxiaoyu

android.provider.Settings。
1.   ACTION_ACCESSIBILITY_SETTINGS ：    // 跳转系统的辅助功能界面

           Intent intent =  new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS);  
           startActivity(intent);  

2.    ACTION_ADD_ACCOUNT ：               // 显示添加帐户创建一个新的帐户屏幕。【测试跳转到微信登录界面】   

           Intent intent =  new Intent(Settings.ACTION_ADD_ACCOUNT);  
           startActivity(intent);

luxiaoyu

国内一线互联网公司内部面试题库，从一个老码农转载的

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欢迎一线公司员工提交内部面试题库，欢迎star。

一、java基础

luxiaoyu

package solid.util;

import android.graphics.PointF;
import android.support.v4.util.Pair;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

/**

luxiaoyu

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

luxiaoyu

package solid.download;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.text.TextUtils;
import android.util.Log;

import com.squareup.okhttp.Call;

luxiaoyu

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.TransitionDrawable;
import android.support.annotation.DrawableRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.view.animation.AlphaAnimation;

luxiaoyu

    public interface Recall {
        void call();
    }

    public void start(final Recall recall) {
        MyService.printDebugLog("Guarder for " + mPid);
        final ActivityManager activityManager = (ActivityManager) mContext
                .getSystemService(Context.ACTIVITY_SERVICE);
        new Thread(new Runnable() {

luxiaoyu

package com.baidu.luxiaoyu;

import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;

/**
 * 
 * Simple helper class that allows reading of integers.
 * 

luxiaoyu

    /**
     * 把二进制byte数组生成 md5 32位 十六进制字符串，单个字节小于0xf，高位补0。
     * 
     * @param bytes
     *            输入
     * @param upperCase
     *            true：大写， false 小写字符串
     * @return 把二进制byte数组生成 md5 32位 十六进制字符串，单个字节小于0xf，高位补0。
     */
    public static String toMd5(byte[] bytes, boolean upperCase) {

luxiaoyu

        int a = 16;
        // “>>> 无符号右移,高位补0”
        System.out.println(a >>> 1);
        // “>> 右移,高位补符号位”
        System.out.println(a >> 1);