Android對話框自定義標題對話框標題美化操作

2019-12-12 05:44:15

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Android自帶的對話框標題不好看，如果我們需要給彈出的對話框設置一個自己定義的標題，可以使用AlertDialog.Builder的setCustomTitle()方法。

定義一個對話框標題的title.xml文件：

<?xml version="1.0" encoding="UTF-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:background="@color/white"  android:gravity="center_vertical"  android:orientation="vertical" >    <LinearLayout    android:id="@+id/patient_top"    android:layout_width="match_parent"    android:layout_height="50dp"    android:layout_alignParentTop="true"    android:background="@color/green"    android:gravity="center_vertical|center_horizontal"    android:orientation="vertical" >    <TextView      android:id="@+id/txtPatient"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:text="選擇城市"      android:textColor="@color/white"      android:textSize="20sp" />      </LinearLayout></LinearLayout>

MainActivity的布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:gravity="center_vertical|center_horizontal"  android:orientation="vertical"  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="com.hzhi.dialogtest.MainActivity" >  <Button    android:id="@+id/btn01"    android:layout_width="150dp"    android:layout_height="wrap_content"    android:text="選擇城市1" />  <Button    android:id="@+id/btn02"    android:layout_width="150dp"    android:layout_height="wrap_content"    android:text="選擇城市2" /></LinearLayout>

MainActivity.java文件：

package com.hzhi.dialogtest;import android.support.v7.app.ActionBarActivity;import android.app.AlertDialog;import android.content.DialogInterface;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends ActionBarActivity implements OnClickListener{    final String[] cities = new String[6];  Button button_01, button_02;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    initView();  }    private void initView(){          cities[0] = "北京";      cities[1] = "上海";      cities[2] = "深圳";      cities[3] = "廣州";      cities[4] = "杭州";      cities[5] = "成都";              button_01 = (Button) findViewById(R.id.btn01);    button_01.setOnClickListener(this);        button_02 = (Button) findViewById(R.id.btn02);    button_02.setOnClickListener(this);      }  @Override  public void onClick(View v) {    // TODO Auto-generated method stub    switch (v.getId()){    case R.id.btn01:      AlertDialog.Builder builder1 = new AlertDialog.Builder(MainActivity.this);      builder1.setItems(cities, new DialogInterface.OnClickListener()      {        @Override        public void onClick(DialogInterface dialog, int which)        {        }      });            builder1.setTitle("選擇城市");      builder1.show();      break;    case R.id.btn02:      LayoutInflater layoutInflater = LayoutInflater.from(MainActivity.this);      View mTitleView = layoutInflater.inflate(R.layout.title, null);      AlertDialog.Builder builder2 = new AlertDialog.Builder(MainActivity.this);      builder2.setItems(cities, new DialogInterface.OnClickListener()      {        @Override        public void onClick(DialogInterface dialog, int which)        {        }      });      builder2.setCustomTitle(mTitleView);      builder2.show();      break;    }      }  }

運行效果如下，左邊是點擊第一個按鈕，彈出Android系統自帶的對話框(直接用setTitle()設置標題)；右邊是點擊第二個按鈕，首先inflate一個View，然后用setCustomTitle()方法把該View設置成對話框的標題。