android自定义对话框视图不适合对话框布局

Question

I create a alertdialog dynamically, it seems okay except that there are some space between the top of dialog view and the top of dialog layout margin. Check the pic would be more clear.

Is there some problem when I inflate the view? I just google it, but I cannot find any clues. Please help to modify the layout.

The dialog.xml is as following

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@color/white"
    android:orientation="vertical">
    <TextView
        android:id="@+id/dialog_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello"
        android:textSize="20sp"
        android:background="@color/light_blue"
        android:gravity="center"
        android:paddingLeft="15sp"
        android:paddingRight="15sp"
        android:paddingTop="5sp"
        android:paddingBottom="5sp"
        android:textColor="@color/white"
        />
    <TextView
        android:id="@+id/dialog_msg"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="@string/hello"
        android:textSize="17sp"
        android:paddingTop="15sp"
        android:paddingBottom="10sp"
        android:textColor="@color/black"
        />
    <Button
        android:id="@+id/dialog_button"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        android:layout_centerInParent="true"
        android:text="@string/Ok"
        android:textColor="@color/light_blue"
        android:textSize="18sp"
        android:background="@color/white"
        />
</LinearLayout>

And the code I dynamic create dialog

private AlertDialog createDialog(String title, String msg){
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    //AlertDialog dialog = builder.create();

    LayoutInflater inflater = (LayoutInflater)getApplicationContext().getSystemService
        (Context.LAYOUT_INFLATER_SERVICE);
    View dialogView = inflater.inflate(R.layout.dialog, null);
    ((TextView)dialogView.findViewById(R.id.dialog_title)).setText(title);
    ((TextView)dialogView.findViewById(R.id.dialog_msg)).setText(msg);
    builder.setView(dialogView);
    final AlertDialog dialog = builder.create();
    ((Button)dialogView.findViewById(R.id.dialog_button)).setOnClickListener(new OnClickListener(){
        public void onClick(View v){
            dialog.dismiss();
        }
    });
    return dialog;
}

Answer 1

Change your LinearLayout 's width and height from wrap_content to match_parent and try.

Also try this

dialog.setView(dialogView,0,0,0,0); after calling

final AlertDialog dialog = builder.create(); in your method

Answer 2

You have missed to show the bulider before return dialog.

builder.show();