由于Toast和OnClickListener的无效组合而导致的错误 [英] Error due to invalid combination of Toast and OnClickListener

问题描述

我正在尝试在 OnCLickListener 中使用 Toast .我的代码触发了以下错误:

I'm trying to use Toast inside OnCLickListener. My code triggers the following error:

The method makeText(Context, CharSequence, int) in the type Toast is not applicable for the arguments (new View.OnClickListener(){}, String, int)

这是我的代码:

    Button register = (Button) findViewById(R.id.register);
    register.setOnClickListener(new View.OnClickListener() {
        public void onClick(View arg0) {
            EditText name = (EditText)findViewById(R.id.name);
            String Lname = name.getText().toString();

            Toast.makeText(this, Lname, Toast.LENGTH_SHORT).show();



        }
    });

推荐答案

正如肯尼所说， this 指的是 View.OnClickListener 而不是您的活动.将此更改为 MyActivity.this .

As The Kenny said, this is refering to the View.OnClickListener instead of your Activity. Change this, to MyActivity.this.

例如，

public class MyActivity extends Activity {
// ... other code here
Toast.makeText(MyActivity.this, Lname, Toast.LENGTH_SHORT).show();

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