AlertDialog with custom layout not showing up

Question

I'm trying to create an alert dialog with a custom view layout, but the screen just dims with no dialog appearing.

AlertDialog.Builder builder = new AlertDialog.Builder(MyActivity.this); builder.setView(findViewById(R.id.system_profile_dialog)); AlertDialog setSysProfileDialog = builder.create(); setSysProfileDialog.show();

XML:

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/system_profile_dialog" android:layout_width="match_parent" android:layout_height="match_parent"> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:hint="@string/system_profile_hint" android:inputType="number" /> </LinearLayout>

Vucko · Accepted Answer · 2017-12-03 21:58:04Z

The problem is this line:

builder.setView(findViewById(R.id.system_profile_dialog));

Change it to:

builder.setView(LayoutInflater.from(this).inflate(R.layout.layout_name, null, false));

You're supposed to pass an inflated view there, not an id of a view in current activity.

yazan · Accepted Answer · 2017-12-03 21:50:54Z

try that

Dialog dialog = new Dialog(this); dialog.setContentView(R.layout.YourFile); EditText editText = (EditText)dialog.findViewById(R.id.YourEditText); dialog.show();

Cristian · Accepted Answer · 2017-12-03 21:54:27Z

Try instantiating the builder with the actual Context object, calling getApplicationContext()

colens · Accepted Answer · 2017-12-03 22:45:49Z

Just replace builder.setView(findViewById(R.id.system_profile_dialog)); with builder.setView(R.id.system_profile_dialog). If you check the official documentation you will find that setView(View) is just settting the view to be shown , but setView(int layoutResourceId) is inflating the view as well.

Yes you are right. If you target <21 then you have to do what Vucko proposed.

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