Android入门之bindService的用法详解
package org.mk.android.demo;
import androidx.appcompat.app.AppCompatActivity;
import android.app.Service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private final String TAG = "SimpleBindService";
private Button buttonBindService;
private Button buttonStopBinding;
private Button buttonGetValueFromBinder;
private Context ctx;
private Intent intent;
private SampleBindService.CountNumBinder countNumBinder;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
buttonBindService = (Button) findViewById(R.id.buttonBindService);
buttonStopBinding = (Button) findViewById(R.id.buttonStopBinding);
buttonGetValueFromBinder = (Button) findViewById(R.id.buttonGetValueFromBinder);
ctx = MainActivity.this;
intent = new Intent(ctx, SampleBindService.class);
buttonBindService.setOnClickListener(new OnClickListener());
buttonStopBinding.setOnClickListener(new OnClickListener());
buttonGetValueFromBinder.setOnClickListener(new OnClickListener());
}
private ServiceConnection conn = new ServiceConnection() {
//Activity与Service断开连接时回调该方法
@Override
public void onServiceDisconnected(ComponentName name) {
Log.i(TAG, ">>>>>>Service DisConnected");
}
//Activity与Service连接成功时回调该方法
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
Log.i(TAG, ">>>>>>Service Connected");
countNumBinder = (SampleBindService.CountNumBinder) service;
}
};
class OnClickListener implements View.OnClickListener {
@Override
public void onClick(View view) {
Intent eIntent;
switch (view.getId()) {
case R.id.buttonBindService:
bindService(intent, conn, Service.BIND_AUTO_CREATE);
break;
case R.id.buttonStopBinding:
unbindService(conn);
break;
case R.id.buttonGetValueFromBinder:
Toast.makeText(getApplicationContext(), "Service的count" + "的值为:" + countNumBinder.getCount(), Toast.LENGTH_LONG).show();
break;
}
}
}
}
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