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[操作系统]Android对话框自定义标题


Android自带的对话框标题不好看,如果我们需要给弹出的对话框设置一个自己定义的标题,可以使用AlertDialog.Builder的setCustomTitle()方法。

定义一个对话框标题的title.

<??><LinearLayout ="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="选择城市"      android:textColor="@color/white"      android:textSize="20sp" />      </LinearLayout></LinearLayout>

MainActivity的布局文件:

<LinearLayout ="http://schemas.android.com/apk/res/android"  ="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="选择城市1" />  <Button    android:id="@+id/btn02"    android:layout_width="150dp"    android:layout_height="wrap_content"    android:text="选择城市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] = "广州";      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("选择城市");      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;    }      }  }

运行效果如下,左边是点击第一个按钮,弹出Android系统自带的对话框(直接用setTitle()设置标题);右边是点击第二个按钮,首先inflate一个View,然后用setCustomTitle()方法把该View设置成对话框的标题。