我需要应用程序(或服务)方面的帮助,基本上我只是在胡闹,并决定看看如果检测到我的手机响铃,我是否可以让我的应用程序发送电子邮件。(我知道这看起来很愚蠢,但它对我来说更像是一个概念证明。我在我的应用程序中制作了自定义类(没有默认的主要活动),我认为它没有被执行。我将 Toast 消息设置为在应用程序运行时弹出,但我从未看到出现。所以,我想我需要做一些事情来让我的类像默认的一样执行,如果是这样,我将如何去做?在 android 清单中,我添加的唯一内容是read_phone_state和互联网的权限(以防需要发送电子邮件)
我的问题是我需要更改什么(无需调试它)才能使其工作?我是否需要在清单文件中添加额外信息?我是否需要更改应用首次启动时执行"调用服务"类的设置?拜托,谢谢。
public class MainActivity extends Activity {
PhoneStateListener listener;
TelephonyManager tm;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toast.makeText(getApplicationContext(), "Service has started", Toast.LENGTH_LONG).show();
listener = new MyphoneStateListener();
tm = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
tm.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
}
public class MyphoneStateListener extends PhoneStateListener
{
public void onCallStateChanged(int state, String incomingNumber)
{
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
break;
case TelephonyManager.CALL_STATE_RINGING:
sendemail();
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
default:
break;
}
super.onCallStateChanged(state, incomingNumber);
}
}
private void sendemail()
{
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("message/rfc822");
i.putExtra(Intent.EXTRA_EMAIL , new String[]{"random@gmail.com"});
i.putExtra(Intent.EXTRA_SUBJECT , "phone is ringing");
i.putExtra(Intent.EXTRA_TEXT , "email successfully sent");
startActivity(Intent.createChooser(i, "send mail..."));
Toast.makeText(getApplicationContext(), "Email has been sent", Toast.LENGTH_LONG).show();
try
{
startActivity(Intent.createChooser(i, "Send Email..."));
}
catch(android.content.ActivityNotFoundException ex)
{
}
}
@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;
}
}
如在文档中一样 onCallStateChanged 首先int state
取两个参数,第二个参数是String incomingNumber
但在您当前的代码中,您只是将单个参数传递给它意味着您不会覆盖 onCallStateChanged PhoneStateListener 的方法更改您的代码以工作:
class MyPhoneStateListener extends PhoneStateListener{
@Override
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
break;
case TelephonyManager.CALL_STATE_RINGING:
sendemail();
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
default:
break;
}
super.onCallStateChanged(state, incomingNumber);
}
}