方法makeText（上下文，CharSequence的，INT）在类型吐司不适用于参数（类<ReadContactsActivity>，字符串，整数）

Question

我使用的烤面包内部onPostExecute(Boolean result) method.Here是它的代码

@Override 
protected void onPostExecute(Boolean result) { 
    //objAdapter = new listAdapter(ReadContactsActivity.this, items); 
    //listView.setAdapter(objAdapter); 
    dialog.dismiss(); 
    if(result) 
     Toast.makeText(this, "Email was sent successfully.", Toast.LENGTH_LONG).show(); 
    else 
     Toast.makeText(this, "Email was not sent.", Toast.LENGTH_LONG).show(); 
    } 

} 

我收到错误“在类型敬酒方法makeText(Context, CharSequence, int)不适用于参数(Class<ReadContactsActivity>, String, int)”

Answer 1

对于下面的代码显示吐司使用。

@Override 
protected void onPostExecute(Boolean result) { 
    //objAdapter = new listAdapter(ReadContactsActivity.this, items); 
    //listView.setAdapter(objAdapter); 
    dialog.dismiss(); 
    if(result) 
     Toast.makeText(Yourclassname.this, "Email was sent successfully.", Toast.LENGTH_LONG).show(); 
    else 
     Toast.makeText(Yourclassname.this, "Email was not sent.", Toast.LENGTH_LONG).show(); 
    } 

}