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修改上次项目activity_main.xml<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.xinwei.servicetest.MainActivity">
<Button
android:id="@+id/start_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
android:text="start service"
app:layout_constraintBottom_toTopOf="@+id/bind_service"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.502" />
<Button
android:id="@+id/stop_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="stop service"
app:layout_constraintBottom_toTopOf="@+id/unbind_service"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.783"
app:layout_constraintStart_toEndOf="@+id/start_service"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.502" />
<Button
android:id="@+id/bind_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="168dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:text="bind service"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/unbind_service"
app:layout_constraintHorizontal_bias="0.2"
app:layout_constraintStart_toStartOf="parent" />
<Button
android:id="@+id/unbind_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="168dp"
android:layout_marginEnd="28dp"
android:text="unbind service"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
</android.support.constraint.ConstraintLayout>
mainactivity.javapackage com.example.xinwei.servicetest;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private MyService.DownloadBinder downloadBinder;
private ServiceConnection connection=new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName componentName, IBinder service) {
downloadBinder=(MyService.DownloadBinder)service;
downloadBinder.startDownload();
downloadBinder.getProgress();
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button startService = (Button)findViewById(R.id.start_service);
Button stopService = (Button)findViewById(R.id.stop_service);
startService.setOnClickListener(this);
stopService.setOnClickListener(this);
Button bindService = (Button)findViewById(R.id.bind_service);
Button unbindService = (Button)findViewById(R.id.unbind_service);
bindService.setOnClickListener(this);
unbindService.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.start_service:
Intent startIntent = new Intent(this,MyService.class);
startService(startIntent);
break;
case R.id.stop_service:
Intent stopIntent = new Intent(this,MyService.class);
stopService(stopIntent);
break;
case R.id.bind_service:
Intent bindIntent=new Intent(this,MyService.class);
bindService(bindIntent,connection,BIND_AUTO_CREATE);
break;
case R.id.unbind_service:
unbindService(connection);
break;
default:
break;
}
}
}
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