Android服务的基本使用2（绑定服务）

天空一碧如洗，灿烂的阳光正从密密的松针的缝隙间射下来，形成一束束粗粗细细的光柱，把飘荡着轻纱般薄雾的林荫照的通亮。

鲁迅《朝花夕拾》

上次讲到了服务的启动服务，这次就来说说绑定服务的简单使用，举个QQ和微信的例子吧，大家都知道微信的登录是可以使用QQ登录的，它们两个不是同一个团队开发的，但是为什么都能通用了，这就是我们服务的魅力了

MainActivity.xml

<EditText
android:id="@+id/ed_main_number"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="787416163"
/>

<EditText
android:id="@+id/ed_main_pwd"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="123456"
/>

<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="登录"
android:onClick="login"
/>

在这里我设定了用户名和密码，便于测试

QQUser 定义对象的一个基本属性

public class QQUser implements Parcelable {
private String qqName;
private String qqPwd;
private String qqNumber;
private String qqSex;

public QQUser() {
}

public QQUser(String qqName, String qqPwd, String qqNumber, String qqSex) {
this.qqName = qqName;
this.qqPwd = qqPwd;
this.qqNumber = qqNumber;
this.qqSex = qqSex;
}

public String getQqName() {
return qqName;
}

public void setQqName(String qqName) {
this.qqName = qqName;
}

public String getQqPwd() {
return qqPwd;
}

public void setQqPwd(String qqPwd) {
this.qqPwd = qqPwd;
}

public String getQqNumber() {
return qqNumber;
}

public void setQqNumber(String qqNumber) {
this.qqNumber = qqNumber;
}

public String getQqSex() {
return qqSex;
}

public void setQqSex(String qqSex) {
this.qqSex = qqSex;
}

@Override
public int describeContents() {
return 0;
}

@Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeString(qqName);
parcel.writeString(qqPwd);
parcel.writeString(qqNumber);
parcel.writeString(qqSex);
}

public static final Parcelable.Creator<QQUser> CREATOR = new Parcelable.Creator<QQUser>() {

@Override
public QQUser createFromParcel(Parcel parcel) {
QQUser qqUser = new QQUser();
qqUser.setQqName(parcel.readString());
qqUser.setQqPwd(parcel.readString());
qqUser.setQqNumber(parcel.readString());
qqUser.setQqSex(parcel.readString());
return qqUser;
}

@Override
public QQUser[] newArray(int i) {
return new QQUser[i];
}
};

}

MainActivity

public class MainActivity extends AppCompatActivity {

private EditText ed_main_number;
private EditText ed_main_pwd;
private Intent intent;
private QQLoginService.MyIBinder myIBinder;
private QQLoginInterface qqLoginInterface;
private QQLoginInterfaceOut qqLoginInterfaceOut;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ed_main_number = (EditText) findViewById(R.id.ed_main_number);
ed_main_pwd = (EditText) findViewById(R.id.ed_main_pwd);

intent = new Intent(this, QQLoginService.class);
}

ServiceConnection connection = new ServiceConnection() {

@Override
public void onServiceConnected(ComponentName name, IBinder iBinder) {
Log.i("test", "绑定成功了");

qqLoginInterfaceOut = QQLoginInterfaceOut.Stub.asInterface(iBinder);

}

@Override
public void onServiceDisconnected(ComponentName name) {

}
};

@Override
protected void onResume() {
super.onResume();
//绑定服务
bindService(intent, connection, Service.BIND_AUTO_CREATE);

}

public void login(View view) {
//获取用户名和密码
String number = ed_main_number.getText().toString();
String pwd = ed_main_pwd.getText().toString();

boolean flag=false;
try {
Map map=new HashMap();
map.put("number",number);
map.put("pwd",pwd);
QQUser qqUser=qqLoginInterfaceOut.login2(map);
Toast.makeText(MainActivity.this, ""+qqUser.getQqName()+""+qqUser.getQqSex(), Toast.LENGTH_SHORT).show();
} catch (RemoteException e) {
e.printStackTrace();
}

}
}

QQLoginService

public class QQLoginService extends Service {
class MyIBinder extends QQLoginInterfaceOut.Stub{

@Override
public boolean login(String number, String pwd) throws RemoteException {
if ("787416163".equals(number) && "123456".equals(pwd)) {
return true;
}
return false;
}

@Override
public QQUser login2(Map map) throws RemoteException {

String number=map.get("number").toString();
String pwd=map.get("pwd").toString();

if("787416163".equals(number)&&"123456".equals(pwd)){
QQUser qqUser=new QQUser("安",pwd,number,"平");
return qqUser;
}
return null;
}
}

@Nullable
@Override
public IBinder onBind(Intent intent) {
Log.i("test", "onBind");
return new MyIBinder();
}
}

QQLoginInterfaceOut.aidl

// QQLoginInterfaceOut.aidl
package com.zking.risk_android_qq;
import com.zking.risk_android_qq.QQUser;
interface QQLoginInterfaceOut {
boolean login(String number,String pwd);
QQUser login2(in Map map);

}

在这里要注意的是AIDL的取名是唯一性的，不能和上面取同一个名字，因为Build后它会生成一个Java文件，同时里面的每个单词都要写对要不然报错了后面再来找回很麻烦,我们进程间通信 (IPC)也是靠这个类

QQUser.aidl

package com.zking.risk_android_qq;
import com.zking.risk_android_qq.QQUser;
parcelable QQUser;

接下来我们看看微信

MainActivity

public class MainActivity extends AppCompatActivity {
private EditText ed_main_number;
private EditText ed_main_pwd;
private Intent intent;
private QQLoginInterfaceOut qqLoginInterfaceOut;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

ed_main_number = (EditText) findViewById(R.id.ed_main_number);
ed_main_pwd = (EditText) findViewById(R.id.ed_main_pwd);
intent = new Intent();

ComponentName componentName=new ComponentName("com.zking.risk_android_qq","com.zking.risk_android_qq.QQLoginService");
intent.setComponent(componentName);

}

ServiceConnection connection=new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder iBinder) {
qqLoginInterfaceOut = QQLoginInterfaceOut.Stub.asInterface(iBinder);
}

@Override
public void onServiceDisconnected(ComponentName name) {

}
};

@Override
protected void onResume() {
super.onResume();
//绑定服务
bindService(intent,connection, Service.BIND_AUTO_CREATE);
}

public void login(View view) {
String number = ed_main_number.getText().toString();
String pwd = ed_main_pwd.getText().toString();

try {
//boolean flag= qqLoginInterfaceOut.login(number,pwd);
Map map=new HashMap();
map.put("number",number);
map.put("pwd",pwd);
QQUser qqUser=qqLoginInterfaceOut.login2(map);
qqLoginInterfaceOut.login2(map);

Toast.makeText(MainActivity.this, ""+qqUser.getQqName(), Toast.LENGTH_SHORT).show();
} catch (RemoteException e) {
e.printStackTrace();
}

}

}

Android 5.0以后启动其他应用程序的服务，不允许使用隐式，所以我们可以用ComponentName

然后我们要把QQ的包和QQLoginInterfaceOut一起粘贴到微信