Android移动后端服务(BAAS)快速搭建后台服务器之Bmob-android学习之旅(75)

个人移动开发者的最头疼的问题,就是App的网络后台,包含数据库等,国外目前有比较成熟的解决方案,但是限制于墙的问题,推荐国内的解决方案,比较出名的是Bmob和AVOS cloud和Atom等,这一次我们重点介绍Bmob

使用步骤

1.下载android SDK,里卖包括一个简单的demo和Bmob的两个jar包,可能还有一些Okhttp这类的Jar包,只需要把和Bmob相关的jar包复制到app底下的libs下

2.android studio下需要邮件app项目,打开module setting,选中dependency,电击右上角的加号,选择从文件添加,找到libs下面的jar包,依次加入

3.打开快速开发文档,在manifest里面导入需要的权限,注意javaBean需要继承BmobObjext,这个类封装了网络操作像在本地一样执行存贮然后,在activity里面初始化

4.还有不懂的看demo和开发文档,左边栏是导航很清楚

Bmob的数据库和后台推送,以及短信和app网页这些技术很好,我仅仅使用了数据库的功能

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下面简要介绍我的demo,是一个和手台数据库交互的登陆系统,包括注册和登陆界面,会有各种的输入检查,包括手机号是否重复,密码和再次输入的密码是否一致,是否为空等,注册后的信息存放在数据库,登陆成功后进入一个空的Activity,显示Toast登陆成功

废话不多说,代码如下

登陆类代码

package com.example.euler_kalvinhe.bmobtest;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import java.util.List;

import cn.bmob.v3.Bmob;
import cn.bmob.v3.BmobQuery;
import cn.bmob.v3.listener.FindListener;

/**
 * Created by Euler-KalvinHe on 2015/8/24.
 */
public class LoginActivity extends Activity {
    private EditText userName,password;
    private Button login,regeter;
    String username,pass;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);
        initViews();
        Toast.makeText(LoginActivity.this,username+pass,Toast.LENGTH_LONG).show();
        Bmob.initialize(this, "79bda8edfbabc323575348b6d50508e6");
        login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                username = userName.getText().toString();
                pass = password.getText().toString();
                BmobQuery<User> query = new BmobQuery<User>();
                query.addWhereEqualTo("userName",username);
                query.findObjects(LoginActivity.this,new FindListener<User>() {
                    @Override
                    public void onSuccess(List<User> users) {
                        String str = null;
                        str = users.get(0).getPassword();
                        if (str.equals(pass)){
                            Intent intent = new Intent(LoginActivity.this,OutActivity.class);
                            startActivity(intent);
                        }else{
                            Toast.makeText(LoginActivity.this,"用户名或者密码不正确",Toast.LENGTH_LONG).show();
                        }
                       // Toast.makeText(LoginActivity.this,str,Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void onError(int i, String s) {
                        Toast.makeText(LoginActivity.this,"登录失败",Toast.LENGTH_LONG).show();
                    }
                });
            }
        });
        regeter.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(LoginActivity.this,RegesterActivity.class);
                startActivity(intent);
                finish();
            }
        });
    }
    private void initViews(){
        userName = (EditText) findViewById(R.id.userName);
        login = (Button) findViewById(R.id.log);
        password = (EditText) findViewById(R.id.password);
        regeter = (Button) findViewById(R.id.regester);
    }
    private void logIn(){
        username = userName.getText().toString();
        pass = password.getText().toString();

    }
    private String queryPass(String username){
        final String[] passTwo = {null};
        if (username == null){
            return null;
        }
        BmobQuery<User> query = new BmobQuery<User>();
        query.addWhereEqualTo("userName",username);
        query.findObjects(LoginActivity.this,new FindListener<User>() {
            @Override
            public void onSuccess(List<User> users) {
                passTwo[0] = users.get(0).getPassword();
                Toast.makeText(LoginActivity.this,passTwo[0],Toast.LENGTH_LONG).show();
            }

            @Override
            public void onError(int i, String s) {
                Toast.makeText(LoginActivity.this,"登录失败",Toast.LENGTH_LONG).show();
            }
        });
        return passTwo[0];
    }
}

注册类代码

package com.example.euler_kalvinhe.bmobtest;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import java.util.List;

import cn.bmob.v3.Bmob;
import cn.bmob.v3.BmobQuery;
import cn.bmob.v3.listener.FindListener;
import cn.bmob.v3.listener.SaveListener;

public class RegesterActivity extends Activity{
    private EditText userName, phoneNumber, password, passwordAgain;
    private Button regester,login;
    private String username,pass,passAgain;
    private String phone;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.regester);
        initViews();
        Bmob.initialize(this, "79bda8edfbabc323575348b6d50508e6");
        regester.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                regesterUser();
            }
        });
        login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(RegesterActivity.this,LoginActivity.class);
                startActivity(intent);
                finish();
            }
        });
    }

    private void initViews() {
        regester = (Button) findViewById(R.id.regester);
        passwordAgain = (EditText) findViewById(R.id.passwordAgain);
        password = (EditText) findViewById(R.id.password);
        phoneNumber = (EditText) findViewById(R.id.phoneNumber);
        userName = (EditText) findViewById(R.id.userName);
        login = (Button) findViewById(R.id.login);
    }
    private void regesterUser(){
        username = userName.getText().toString();
        pass = password.getText().toString();
        passAgain = passwordAgain.getText().toString();
        phone = phoneNumber.getText().toString();
        if (username != null && pass != null && password != null && phone != null ){
            if ( pass.equals(passAgain)){
            BmobQuery<User> query = new BmobQuery<User>();
            query.findObjects(RegesterActivity.this,new FindListener<User>() {
                @Override
                public void onSuccess(List<User> users) {
                    boolean flag = false;
                    for (User u:users){
                        if (phone.equals(u.getPhoneNumber())){
                            flag = true;
                            break;
                        }
                    }
                    if (flag){
                        phoneNumber.setText("");
                        Toast.makeText(RegesterActivity.this, "手机号已经被注册,请重试", Toast.LENGTH_LONG).show();
                    }else{
                        User user = new User();
                        user.setUserName(username);
                        user.setPassword(pass);
                        user.setPhoneNumber(phone);
                        user.save(RegesterActivity.this,new SaveListener() {
                            @Override
                            public void onSuccess() {
                                Toast.makeText(RegesterActivity.this,"注册成功",Toast.LENGTH_LONG).show();
                                Intent intent = new Intent(RegesterActivity.this,LoginActivity.class);
                                startActivity(intent);
                                finish();
                            }

                            @Override
                            public void onFailure(int i, String s) {
                                Toast.makeText(RegesterActivity.this,"注册失败",Toast.LENGTH_LONG).show();
                            }
                        });
                    }
                }

                @Override
                public void onError(int i, String s) {
                    Toast.makeText(RegesterActivity.this,"请检查网络重试",Toast.LENGTH_LONG).show();
                }
            });}else{
                password.setText("");
                passwordAgain.setText("");
                Toast.makeText(RegesterActivity.this,"密码不一致,请重试",Toast.LENGTH_LONG).show();
            }
        }else {
            userName.setText("");
            password.setText("");
            passwordAgain.setText("");
            phoneNumber.setText("");
            Toast.makeText(RegesterActivity.this,"不能为空",Toast.LENGTH_LONG).show();
        }
    }
}

javaBmob代码

package com.example.euler_kalvinhe.bmobtest;

import cn.bmob.v3.BmobObject;

/**
 * Created by Euler-KalvinHe on 2015/8/24.
 */
public class User extends BmobObject{
    private String userName;
    private String phoneNumber;
    private String password;

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getPhoneNumber() {
        return phoneNumber;
    }

    public void setPhoneNumber(String phoneNumber) {
        this.phoneNumber = phoneNumber;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

主类代码

package com.example.euler_kalvinhe.bmobtest;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Toast;

/**
 * Created by Euler-KalvinHe on 2015/8/24.
 */
public class OutActivity extends Activity{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toast.makeText(this,"登陆成功",Toast.LENGTH_LONG).show();
    }
}

布局代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <EditText
        android:id="@+id/userName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="用户名"/>
    <EditText
        android:id="@+id/phoneNumber"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="电话号码"/>
    <EditText
        android:id="@+id/password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="密码"/>
    <EditText
        android:id="@+id/passwordAgain"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="确认密码"/>
    <Button
    android:id="@+id/regester"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="注册"
    />
    <Button
        android:id="@+id/login"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="返回登录"
        />
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <EditText
        android:id="@+id/userName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="用户名"/>
    <EditText
        android:id="@+id/password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="密码"/>
    <Button
        android:id="@+id/log"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="登陆"
        />
    <Button
        android:id="@+id/regester"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="注册"
        />
</LinearLayout>

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github项目地址,大家可以去下载项目源码

https://github.com/fengsehng/BmobTest