Service案例.zip

package com.lxz.app11; import androidx.appcompat.app.AppCompatActivity; import android.content.ComponentName; import android.content.Intent; import android.content.ServiceConnection; import android.os.Bundle; import android.os.IBinder; import android.view.View; import android.widget.TextView; import android.widget.Toast; //输出计算结果案例 public class CalculateActivity extends AppCompatActivity { //是不是注册标志 private boolean flag=false; //Service Calculate service=null; //连接对象 ConnectionUtil conn=null; //Mybinder对象，用于获取Service Calculate.MyBinder binder=null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_calculate); } //解绑服务 public void unBindService11(View view) { if (flag){ unbindService(conn); flag=!flag; } else { Toast.makeText(getApplicationContext(), "暂为可解绑的服务！", Toast.LENGTH_SHORT).show(); } } //阶乘 public void textgetJiecheng(View view) { if (flag){ TextView textView=findViewById(R.id.textnumber); TextView result=findViewById(R.id.result); if (textView.getText().toString().trim().equals("")){ Toast.makeText(getApplicationContext(), "请输入有效数字！", Toast.LENGTH_SHORT).show(); } else{ result.setText(service.getJieCheng( Long.parseLong(textView.getText().toString().trim()))+""); } } else { Toast.makeText(getApplicationContext(), "请先绑定服务！", Toast.LENGTH_SHORT).show(); } } //求和 public void textgetSum(View view) { if (flag){ TextView textView=findViewById(R.id.textnumber); TextView result=findViewById(R.id.result); if (textView.getText().toString().trim().equals("")){ Toast.makeText(getApplicationContext(), "请输入有效数字！", Toast.LENGTH_SHORT).show(); } else{ result.setText(service.getSum( Integer.parseInt(textView.getText().toString().trim()))+""); } } else { Toast.makeText(getApplicationContext(), "请先绑定服务！", Toast.LENGTH_SHORT).show(); } } //服务绑定 public void bindService11(View view) { if (!flag){ conn=new ConnectionUtil(); Intent intent=new Intent(); intent.setClass(getApplicationContext(),Calculate.class); intent.putExtra("code","200"); bindService(intent,conn,BIND_AUTO_CREATE); flag=!flag; } else { Toast.makeText(getApplicationContext(), "请不要重复绑定！", Toast.LENGTH_SHORT).show(); } } //连接类 private class ConnectionUtil implements ServiceConnection { @Override public void onServiceConnected(ComponentName componentName, IBinder iBinder) { //获取binder对象 binder= (Calculate.MyBinder) iBinder; //获取service service=binder.getService(); } @Override public void onServiceDisconnected(ComponentName componentName) { binder=null; service=null; } } }