Android之Bmob移动后端云服务器

（1）:添加依赖：在app下的build.gradle中添加 compile 'cn.bmob.android:bmob-sdk:3.4.6' compile 'com.squareup.okhttp:okhttp:2.4.0'//CDN文件服务使用okhttp相关包进行文件的上传和下载（必填） compile 'com.squareup.okio:okio:1.4.0' sourceSets { main.jniLibs.srcDirs = ['libs'] } useLibrary 'org.apache.http.legacy' 

<!--允许联网--> <uses-permission android:name="android.permission.INTERNET"/> <!--获取GSM（2g）、WCDMA（联通3g）等网络状态的信息 --> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <!--获取wifi网络状态的信息--> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <!--保持CPU运转，屏幕和键盘灯有可能是关闭的,用于文件上传和下载--> <uses-permission android:name="android.permission.WAKE_LOCK"/> <!--获取sd卡写的权限，用于文件上传和下载--> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <!--允许读取手机状态 用于创建BmobInstallation--> <uses-permission android:name="android.permission.READ_PHONE_STATE"/> 

maven { url "https://raw.github.com/bmob/bmob-android-sdk/master"} 

package cn.day1.model; import cn.bmob.v3.BmobObject; /** * Created by CMusketeer on 17/10/22. */ public class Person extends BmobObject { private String name; private String password; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } 

<?xml version="1.0" encoding="utf-8"?> <Linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="cn.day1.bmobtest1.MainActivity"> <TextView android:gravity="center" android:textSize="20dp" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="登录" /> <EditText android:id="@+id/id_username" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="username"/> <EditText android:id="@+id/id_userpassword" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="password" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <Button android:id="@+id/id_ok" android:layout_width="0dp" android:text="登录" android:layout_height="wrap_content" android:layout_weight="1"/> <Button android:id="@+id/id_register" android:text="注册" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" /> </LinearLayout> </LinearLayout>

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="cn.day1.bmobtest1.MainActivity"> <TextView android:gravity="center" android:textSize="20dp" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="注册中心" /> <EditText android:id="@+id/id_register_username" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="username"/> <EditText android:id="@+id/id_register_userpassword" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="password" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <Button android:id="@+id/id_register_ok" android:text="注册" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" /> </LinearLayout> </LinearLayout> 

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:text="成功登录" android:gravity="center" android:textSize="50dp"/> </LinearLayout>

package cn.day1.bmobtest1; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; import cn.bmob.v3.listener.SaveListener; import cn.day1.model.Person; /** * Created by CMusketeer on 17/10/22. */ public class RegisterActivity extends Activity { private TextView register_user; private TextView register_password; private Button register_ok; private Person p2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.register_layout); addControl();//加载控件 addRegisterShow();//注册方法 } private void addRegisterShow() { register_ok.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { final String rUser=register_user.getText().toString().trim(); String rPassword=register_password.getText().toString().trim(); //判断用户名和密码是否为空,如果为空则不能进去。 if(rUser.length()>0&&rPassword.length()>0){ p2 = new Person(); p2.setName(rUser); p2.setPassword(rPassword); //插入方法 p2.save(RegisterActivity.this, new SaveListener() { @Override public void onSuccess() { // TODO Auto-generated method stub register_password.setText(""); register_user.setText(""); Toast.makeText(RegisterActivity.this, "添加数据成功，返回objectId为：" + p2.getObjectId(), Toast.LENGTH_SHORT).show(); } @Override public void onFailure(int code, String msg) { // TODO Auto-generated method stub Toast.makeText(RegisterActivity.this, "创建数据失败：" + msg, Toast.LENGTH_SHORT).show(); } }); }else{ Toast.makeText(RegisterActivity.this, "用户名或者密码不能为空", Toast.LENGTH_SHORT).show(); } } }); } private void addControl() { register_user = (TextView) findViewById(R.id.id_register_username); register_password = (TextView) findViewById(R.id.id_register_userpassword); register_ok = (Button) findViewById(R.id.id_register_ok); } } 

package cn.day1.bmobtest1; import android.content.Intent; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.TextView; 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.day1.model.Person; public class MainActivity extends AppCompatActivity { private Person p2; private TextView lgUser; private TextView lgPassword; private Button btn_ok; private Button btn_rg; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Bmob.initialize(this, "你的 应用id"); setContentView(R.layout.activity_main); addControl(); addLogin(); } private void addLogin() { btn_rg.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent=new Intent(MainActivity.this,RegisterActivity.class); startActivity(intent); } }); btn_ok.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { BmobQuery<Person> query=new BmobQuery<Person>(); query.findObjects(MainActivity.this,new FindListener<Person>(){ String lgU=lgUser.getText().toString().trim(); String lgp=lgPassword.getText().toString().trim(); int panduan=1; @Override public void onSuccess(List<Person> list) { for(int i=0;i<list.size();i++){ String name=list.get(i).getName(); String password=list.get(i).getPassword(); Log.e("user","唯一 id:"+list.get(i).getObjectId()+"----"+name+"---"+password); if(name.equals(lgU) && password.equals(lgp)){ Toast.makeText(MainActivity.this, "登录成功", Toast.LENGTH_SHORT).show(); panduan=2; //成功后panduan等于2,则跳出该循环,并且把输入快都清空,跳转到指定页面 lgUser.setText(""); lgPassword.setText(""); Intent intent=new Intent(MainActivity.this,Success.class); startActivity(intent); break; } } if(panduan==1){ Toast.makeText(MainActivity.this, "登录失败", Toast.LENGTH_SHORT).show(); } } @Override public void onError(int i, String s) { } }); } }); } private void addControl() { lgUser = (TextView) findViewById(R.id.id_username); lgPassword = (TextView) findViewById(R.id.id_userpassword); btn_ok = (Button) findViewById(R.id.id_ok); btn_rg = (Button) findViewById(R.id.id_register); } } 

package cn.day1.bmobtest1; import android.app.Activity; import android.os.Bundle; /** * Created by CMusketeer on 17/10/22. */ public class Success extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.success); } } 

 处理增删查改 增： person = new Person(); person.setName(user); person.setAddress(password); person.save(new SaveListener<String>() { @Override public void done(String s, BmobException e) { if(e == null){ Toast.makeText(MainActivity.this, "成功", Toast.LENGTH_SHORT).show(); } else{ } } }); 删 Id可以通过查处所有的，从而得到id id=list.get(i).getObjectId(); person = new Person(); person.delete(id, new UpdateListener() { @Override public void done(BmobException e) { if(e==null){ Log.e("sss","删除成功"); } } }); 查 ：和上面的查不大一样，这也是一种方法 //查询所有， query.findObjects(new FindListener<Person>() { @Override public void done(List<Person> list, BmobException e) { }} //查询单个 query.getObject(id，new listener) 改 person.setName(“111”); person.update(id,new UpdateListener() { @Override public void done(BmobException e) { if(e==null){ // Toast.makeText(MainActivity.this, "更改成功", Toast.LENGTH_SHORT).show(); Log.e("sss","更改成功"); } }