对话框样式的Activity

亦凉 2022-03-18 10:43 255阅读 0赞

**一、**定义一个主题样式 Theme.CustomDialog 实现个性化的对话框。  
1、AndroidManifest.xml 文件中，申明 activity 的主题使用自定义对话框样式。

Java 代码

1.  <activity android:name=".app.CustomDialogActivity"
2.  android:label="@string/activity\_custom\_dialog"
3.  android:theme="@style/Theme.CustomDialog"> //好像应该是android:theme="@style/Theme.Dialog">  
    
4.  <intent-filter>
5.  <action android:name="android.intent.action.MAIN" />
6.  <category android:name="android.intent.category.SAMPLE\_CODE" />
7.  </intent-filter>
8.  </activity>

2、res/values/styles.xml 样式文件中定义一个对话框主题样式，这里继承了 android:style/Theme.Dialog 主题，并且窗口样式 android:windowBackground 引用了 @drawable/filled\_box

Java 代码

1.  <style name="Theme.CustomDialog" parent="android:style/Theme.Dialog">
2.  <item name="android:windowBackground">@drawable/filled\_box</item>
3.  </style>

3、res/drawable/filled\_box.xml 定义了 Shape 类型的 drawable（抽象的可画区域），最终是通过这个来实现新对话框的样式。

Java 代码

1.  <shape xmlns:android="http://schemas.android.com/apk/res/android">
2.  <solid android:color="\#f0600000"/>
3.  <stroke android:width="3dp" color="\#ffff8080"/>
4.  <corners android:radius="3dp" />
5.  <padding android:left="10dp" android:top="10dp"
6.  android:right="10dp" android:bottom="10dp" />
7.  </shape>

**二、**个性化Dialog小图标，主要代码如下:

Java 代码

1.  Override
2.  protected void onCreate(Bundle savedInstanceState) \{
3.  // Be sure to call the super class.
4.  super.onCreate(savedInstanceState);
5.  
6.  requestWindowFeature(Window.FEATURE\_LEFT\_ICON);
7.  
8.  // See assets/res/any/layout/dialog\_activity.xml for this
9.  // view layout definition, which is being set here as
10. // the content of our screen.
11. setContentView(R.layout.dialog\_activity);
12. 
13. getWindow().setFeatureDrawableResource(Window.FEATURE\_LEFT\_ICON,
14. android.R.drawable.ic\_dialog\_alert);
15. \}

Override  protected void onCreate(Bundle savedInstanceState) {         // Be sure to call the super class.         super.onCreate(savedInstanceState);                  requestWindowFeature(Window.FEATURE_LEFT_ICON);                  // See assets/res/any/layout/dialog_activity.xml for this         // view layout definition, which is being set here as         // the content of our screen.         setContentView(R.layout.dialog_activity);                  getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,                  android.R.drawable.ic_dialog_alert);     }

1、申请设置个性化小图标，需在 setContentView(R.layout.dialog\_activity) 之前调用。

Java 代码

1.  requestWindowFeature(Window.FEATURE\_LEFT\_ICON);

requestWindowFeature(Window.FEATURE_LEFT_ICON);

2、设置小图标

Java 代码

1.  getWindow().setFeatureDrawableResource(Window.FEATURE\_LEFT\_ICON,
2.  android.R.drawable.ic\_dialog\_alert);

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