我有下面的代码,创造警告对话框,我添加了两个编辑短信给它,但一旦我运行应用程序中的EditText内的值不会retrived我与NullPointerException异常应用程序崩溃:将EditText添加到警报对话框。
的代码是:
AlertDialog.Builder alert = new AlertDialog.Builder(this);
LayoutInflater inflater=this.getLayoutInflater();
final EditText usernameInput=(EditText)findViewById(R.id.dialogusername);
final EditText passwordInput=(EditText)findViewById(R.id.dialogpassword);
alert.setView(inflater.inflate(R.layout.dialog,null));
alert.setTitle("Enter Password");
alert.setMessage("Enter password to remove the app:");
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
//provide user with caution before uninstalling
//also here should be added a AsyncTask that going to read the password and once its checked the password is correct the app will be removed
value1=usernameInput.getText().toString();
value2=passwordInput.getText().toString();
if(value1.equals(null)&&value2.equals(null))
{Toast.makeText(context, "Enter username and password", Toast.LENGTH_SHORT).show();}
}
});
});
alert.show();
你调用了错误的findViewById。调用alert.findViewByID – Yahor10
感谢Yahor10,但我试图按照你的方式做,并不断收到错误,因为没有函数调用alert.findViewById();我唯一得到的是this.findViewById()这也没有工作..但任何我如何张贴解决方案,我用于解决这个问题下面.. –