java - Android - 如何使用 Intent.ACTION_CALL 激活调用紧急号码？

Question

我正在开发一个 Android 应用程序，其中有紧急号码调用功能。我正在使用下面的调用代码:

private void call(String pnum) {
    private TelephonyManager telephone;
    private PhoneListener phList;
    telephone = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
    phList = new PhoneListener(this);
    telephone.listen(phList, PhoneStateListener.LISTEN_CALL_STATE);

    Intent call = new Intent(Intent.ACTION_CALL);
    call.setData(Uri.parse("tel:" + pnum));
    call.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(call);
    finish();
}

PhoneListener 类如下:

public class PhoneListener extends PhoneStateListener {
   boolean called = false;
   TelephonyManager mTelMgr;
   InitiateScreen m;

   public PhoneListener(InitiateScreen activity) {
       mTelMgr = (TelephonyManager) activity
            .getSystemService(Context.TELEPHONY_SERVICE);
       m = activity;
    }

   @Override
   public void onCallStateChanged(int state, String inNum) {
       super.onCallStateChanged(state, inNum);

       // Don't fire before the call was made
       if (state == TelephonyManager.CALL_STATE_OFFHOOK)
        called = true;

       // Call has ended -- now bring the activity back to front
       if (called && state == TelephonyManager.CALL_STATE_IDLE) {
        called = false;
        mTelMgr.listen(this, PhoneStateListener.LISTEN_NONE);
       }
    }
   }

由于我正在使用INTENT.ACTION_CALL，因此调用应该自动发生。但对于紧急号码，拨号盘显示 (ACTION_DIAL)。我已经用非紧急号码验证了相同的代码。通话自动进行。那么，Android不支持直接调用紧急号码吗？我们不能在 Android 中调用 ACTION.CALL 来获取紧急号码吗？请帮助我提供您的意见。

Answer 1

在您的 Activity 中调用它

Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + "911"));
startActivity(intent);

将此权限添加到您的 list 中: <uses-permission android:name="android.permission.CALL_PHONE" />