[英]Can't add OnClickListener to a Button in a Dialog
我编写了一个函数来处理Dialog
显示,但我无法在其中使用OnClickListener
。 谁能告诉我我的代码有什么问题?
这是我的功能
private void showInputDialog() {
final Dialog dialog=new Dialog(MainDashboard.this);
dialog.setContentView(R.layout.frg_dialog_change_pass);
btn_save_password=(Button) findViewById(R.id.btn_save_password);
btn_cancel_pass=(Button) findViewById(R.id.btn_cancel_pass);
edtOldpass=(EditText) findViewById(R.id.edtOldpass);
edtNewpass=(EditText) findViewById(R.id.edtNewpass);
edtConfirmpass=(EditText)findViewById(R.id.edtConfirmpass);
dialog.show();///Show the dialog.
btn_save_password.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(MainDashboard.this, "Success", Toast.LENGTH_SHORT).show();
dialog.cancel();
}
});
}
调用Activity.findViewById()
将在您的Activity
布局中查找View
(您通过在onCreate()
调用setContentView()
设置的那个)。
我猜那些View
在你的Dialog
布局中,所以你需要在你的Dialog
实例上调用findViewById()
:
btn_save_password = (Button) dialog.findViewById(R.id.btn_save_password);
btn_cancel_pass = (Button) dialog.findViewById(R.id.btn_cancel_pass);
edtOldpass = (EditText) dialog.findViewById(R.id.edtOldpass);
edtNewpass = (EditText) dialog.findViewById(R.id.edtNewpass);
edtConfirmpass = (EditText) dialog.findViewById(R.id.edtConfirmpass);
// Declare this globally above oncreate
private android.app.AlertDialog dialog;
android.app.AlertDialog.Builder alertDialog = new android.app.AlertDialog.Builder(MainDashboard.this);
LayoutInflater layoutInflater = getLayoutInflater();
View alertView = layoutInflater.inflate(R.layout.frg_dialog_change_pass, null);
alertDialog.setView(alertView);
alertDialog.setCancelable(false);
Button btn_save_password= (Button) alertView.findViewById(R.id.btn_save_password);
btn_save_password.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// do your stuff here
}
});
if(dialog !=null)
dialog.dismiss();
dialog = alertDialog.create();
dialog.show();
将您的功能更改为:
private void showInputDialog() {
final Dialog dialog=new Dialog(MainDashboard.this);
View view = LayoutInflater.from(MainDashboard.this).inflate(R.layout.frg_dialog_change_pass);
dialog.setContentView(view);
btn_save_password=(Button) view.findViewById(R.id.btn_save_password);
btn_cancel_pass=(Button) view.findViewById(R.id.btn_cancel_pass);
edtOldpass=(EditText) view.findViewById(R.id.edtOldpass);
edtNewpass=(EditText) view.findViewById(R.id.edtNewpass);
edtConfirmpass=(EditText)view.findViewById(R.id.edtConfirmpass);
dialog.show();///Show the dialog.
btn_save_password.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(MainDashboard.this, "Success", Toast.LENGTH_SHORT).show();
dialog.cancel();
}
});
}
基本上,您必须将findViewById
与用于dialog
的view
使用。
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