java - 找不到符号类 MakeText 错误

Question

这是我实现 Toast 的方式:

    if ((name == "") || (pass == "")){
        Toast invalidLoginToast = new Toast.makeText(this, "aaa", 3).show();
    } else {
        Intent intent = new Intent (this, AnnouncementsActivity.class);
        String deviceId = Secure.getString(this.getContentResolver(), Secure.ANDROID_ID);
        intent.putExtra("NAME", name);
        intent.putExtra("ID", deviceId);
        startActivity(intent);
    }

但是我得到了错误

Error:(34, 48) error: cannot find symbol class makeText

必要的导入已经完成。我是否向方法中发送了错误的参数？

Answer 1

Instantiate a Toast object with one of the makeText() methods. This method takes three parameters: the application Context, the text message, and the duration for the toast. It returns a properly initialized Toast object. You can display the toast notification with show();

Toast.makeText(context, text, duration)

阅读有关的官方指南Toast 。

  Toast.makeText(CurrentActivityName.this,"aaa",Toast.LENGTH_SHORT).show();