eclipse 标记“catch”的语法错误，需要标识符
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Syntax error on token "catch", Identifier expected
提问by user1287195
Okay, so I was writing code and it was working just fine until I got to this problem:
好的，所以我正在编写代码并且它工作得很好，直到我遇到这个问题：
Syntax error on token "catch", Identifier expected
标记“catch”的语法错误，需要标识符
Here is the code with the problem:
这是有问题的代码：
public void onClick(View arg0) {
EditText num=(EditText)findViewById(R.id.editText1);
String number = "tel:" +num.getText().toString().trim();
Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(number));
startActivity(callIntent);
TelephonyManager tManager = (TelephonyManager)
getSystemService(Context.TELEPHONY_SERVICE);
listener = new ListenToPhoneState();
tManager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
//here's the problem
} catch (ActivityNotFoundException activityException) {
Log.e("telephony-example", "Call failed", activityException);
}
private class ListenToPhoneState extends PhoneStateListener {
public void onCallStateChanged(int state, String incomingNumber) {
Log.i("telephony-example", "State changed: " + stateName(state));
}
String stateName(int state) {
switch (state) {
case TelephonyManager.CALL_STATE_IDLE: return "Idle";
case TelephonyManager.CALL_STATE_OFFHOOK: return "Off hook";
case TelephonyManager.CALL_STATE_RINGING: return "Ringing";
}
return Integer.toString(state);
}
}
回答by FoamyGuy
Your error is because you have catchwithout try. I suggest you familiarize yourself with java syntax a little bit better before you attempt to tackle an Android project.
你的错误是因为你catch没有try. 我建议您在尝试处理 Android 项目之前先熟悉一下 java 语法。
回答by Lion
Put a tryblock as shown below.
放置一个try块，如下所示。
public void onClick(View arg0)
{
try
{
EditText num=(EditText)findViewById(R.id.editText1);
String number = "tel:" +num.getText().toString().trim();
Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(number));
startActivity(callIntent);
TelephonyManager tManager = (TelephonyManager)
getSystemService(Context.TELEPHONY_SERVICE);
listener = new ListenToPhoneState();
tManager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
}
catch (ActivityNotFoundException activityException)
{
Log.e("telephony-example", "Call failed", activityException);
}
}
