java - "telephonyService cannot be resolved"方法调用出现错误 `telephonyService.answerRingingCall();`

Question

我正在尝试创建一个应用程序，该应用程序将在选中复选框时自动应答调用。我已将 ITelephony.aidl 添加到 com.android.internal.telephony 并关注了网络上的信息，但我似乎无法启动它，它不允许我使用 answerRingingCall();方法。我收到 telephonyService.answerRingingCall(); 的“telephonyService 无法解析”错误

有什么建议吗？

import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Toast;
import com.android.internal.telephony.ITelephony;

public class AnswerActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        CheckBox AnswerCheckBox = (CheckBox) findViewById(R.id.answerCheck); 

        AnswerCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {


            public void onCheckedChanged(CompoundButton buttonView, 
            boolean isChecked) { 
            // TODO Auto-generated method stub 
            if (buttonView.isChecked()) { 

                telephonyService.answerRingingCall();


            Toast.makeText(getBaseContext(), "Calls will be answered", 
            Toast.LENGTH_SHORT).show(); 
            } 
            else 
            { 
            Toast.makeText(getBaseContext(), "Calls will NOT be answered", 
            Toast.LENGTH_SHORT).show(); 
            } 

            } 
            }); 

            } 

            } 

Answer 1

您应该在 PhoneStateListener 中调用 telephonyService.answerRingingCall(); 方法

  // Create a new PhoneStateListener
  listener = new PhoneStateListener() {
      @Override
      public void onCallStateChanged(int state, String incomingNumber) {

        switch (state) {
        case TelephonyManager.CALL_STATE_IDLE:

          break;
        case TelephonyManager.CALL_STATE_OFFHOOK:

          break;
        case TelephonyManager.CALL_STATE_RINGING:
          // Ringing.. answer now
          telephonyService.answerRingingCall();
          break;
        }
   }