Change title size of alertdialog in android?

问题:

about text in the message there is not problem. I can't change (personalize) color, font, style of Title of alertdialog?

What's the way?

thanks!

回答1:

About font size you can use this:

SpannableStringBuilder ssBuilser = new SpannableStringBuilder("Sample");
StyleSpan span = new StyleSpan(Typeface.ITALIC);
ScaleXSpan span1 = new ScaleXSpan(1);
ssBuilser.setSpan(span, 0, 5, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
ssBuilser.setSpan(span1, 0, 5, Spanned.SPAN_INCLUSIVE_INCLUSIVE);

AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
   builder.setTitle(ssBuilser);
   builder.show();

or

AlertDialog dialog = new AlertDialog.Builder(this).setMessage("Hello world").show();
TextView textView = (TextView) dialog.findViewById(android.R.id.message);
textView.setTextSize(40);

回答2:

Check out this link: Creating dialogs

This should help.

Or this Alert Dialog Builder

回答3:

Here is an full example how i would do it. See the last line of code.

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(cntx);
alertDialogBuilder
.setMessage(Html.fromHtml(cntx.getString(R.string.UltimateDemoText)))
.setCancelable(false)
.setPositiveButton(cntx.getString(R.string.Ok), new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog,int id) { 
    dialog.cancel(); 
    }
 });
AlertDialog alertDialog = alertDialogBuilder.create();    
alertDialog.show();

((TextView)alertDialog.findViewById(android.R.id.title)).setTextSize(TypedValue.COMPLEX_UNIT_SP, 9);

回答4:

There is another way to set a new custom view to a dialog title. We can define every custom view such as TextView and add it some custom properties and set it to the dialog title:

 AlertDialog.Builder builder = new AlertDialog.Builder(OrderItemsActivity.this);

TextView title_of_dialog = new TextView(getApplicationContext());
title_of_dialog.setHeight(50);
title_of_dialog.setBackgroundColor(Color.RED);
title_of_dialog.setText("Custom title");
title_of_dialog.setTextSize(TypedValue.COMPLEX_UNIT_SP, 15);
title_of_dialog.setTextColor(Color.WHITE);
title_of_dialog.setGravity(Gravity.CENTER);

builder.setCustomTitle(title_of_dialog);
builder.create().show();

Here, I define a dynamic TextView and set some properties to it. Finally, I set it to dialog title using setCustomTitle().

回答5:

Let's take example of this customised Dialog. Below are the files used to make it :

res/layout/dialog.xml :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">  <EditText
    android:id="@+id/et_pc_forDialog"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/tv_pc_dialogTitle"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp"
    android:layout_marginTop="20dp"
    android:ems="10"
    android:paddingLeft="10dp"
    android:paddingRight="10dp"
    android:hint="Enter Something to search .."
    android:singleLine="true"
    android:textColor="#FFFFFF"  >
    <requestFocus />
</EditText>
<TextView
    android:id="@+id/tv_pc_dialogTitle"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginLeft="5dp"
    android:text="SEARCH"
    android:textColor="#FFFFFF"
    android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
    android:id="@+id/bt_pc_goButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/et_pc_forDialog"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="14dp"
    android:text="GO"
    android:textColor="#FFFFFF"
    android:textSize="25sp" /> </RelativeLayout>

res/layout/activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >

<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="177dp"
    android:text="Open Dialog" />
</RelativeLayout>

MainActivity.java :

package com.bhavit.stackoverflow;
import android.os.Bundle;
import android.app.Activity;
import android.app.Dialog;
import android.app.Dialog;
import android.graphics.Typeface;
import android.view.Menu;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
import android.app.Dialog;
import android.graphics.Typeface;
import android.view.Menu;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Button openDialog = (Button) findViewById(R.id.button1);
    openDialog.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {


            Dialog dialog = new Dialog(MainActivity.this); // here write the name of your activity in place of "YourActivity"
            dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
            dialog.setContentView(R.layout.dialog);
            TextView tv = (TextView)dialog.findViewById(R.id.tv_pc_dialogTitle);
            Typeface tf = Typeface.createFromAsset(getAssets(), "fonts/GOTHIC.TTF"); // here GOTHIC.TTF is the font-file I have pasted in the asset/fonts folder in my project 
            tv.setTypeface(tf); // Set the typeface like this

            Button bt = (Button) dialog.findViewById(R.id.bt_pc_goButton);
            bt.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {

                    // Write here, what do you want to do on button click

                }
            });

            dialog.show();


        }
    });



    }
 }

This is how you can make a customised dialog, and customise the components of that dialog. Here I have set a custom font to the title of the Dialog.