我目前正在尝试创建一个简单的应用程序，记录您拨打电话的分钟数，然后在接近空闲时间时向您发出警告。
此时，我创建了一个名为 CallService.java 的服务，每当用户呼叫他人时都会调用该服务。该服务仅记录呼叫的开始时间和呼叫的结束时间。该服务是使用名为 OutgoingCallReciever.Java 的类启动的。该类只是等待用户呼叫某人，然后启动 CallService。
我现在尝试在用户电话未呼叫某人时停止 CallService。即（电话状态空闲、摘机或其他人正在呼叫用户）但我不知道该怎么做（我是 Java/Android 新手）。我是否使用 PhoneStateListener 的 onCallStateChanged 方法？ （我不确定如何使用它..）
希望您能帮忙！
课程如下：
MainActivity.java
package com.fouadalnoor.callcounter;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.telephony.TelephonyManager;
import android.telephony.PhoneStateListener;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
PhoneStateListener ps =(PhoneStateListener) getSystemService(TELEPHONY_SERVICE);
Toast.makeText(this, "Phone State = " + tm.getCallState() , Toast.LENGTH_LONG).show();
CheckBox checkBox = (CheckBox) findViewById(R.id.checkBox1);
checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked){
stopService (new Intent(buttonView.getContext(),CallService.class));
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
OutgoingCallReciever.java
package com.fouadalnoor.callcounter;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class OutgoingCallReciever extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
context.startService(new Intent(context, CallService.class));
}
}
呼叫服务.java
package com.fouadalnoor.callcounter;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
import android.widget.Toast;
import java.lang.String;
public class CallService extends Service {
public long startTime,endTime, totalTime;
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onDestroy() {
Toast.makeText(this, "Call Service stopped", Toast.LENGTH_LONG).show();
endTime = System.currentTimeMillis()/1000;
Toast.makeText(this, "endTime = " + endTime, Toast.LENGTH_LONG).show();
totalTime = endTime-startTime;
Toast.makeText(this, "totalTime = " + totalTime , Toast.LENGTH_LONG).show();
}
@Override
public void onStart(Intent intent, int startid) {
Toast.makeText(this, "Call Service started by user.", Toast.LENGTH_LONG).show();
startTime = System.currentTimeMillis()/1000;
Toast.makeText(this, "startTime = "+ startTime, Toast.LENGTH_LONG).show();
}
}
