Customize the Activity title bar of the Android mobile phone

First, let's explain in detail:

When we want to make our mobile phone full screen, we will immediately thinkRequestWindowFeature (featrueId)Function.

I. Enumeration Constants

1. DEFAULT_FEATURES: default system status, which is not required

2. FEATURE_CONTEXT_MENU: Enable ContextMenu. This option is enabled by default. Generally, you do not need to specify

3. FEATURE_CUSTOM_TITLE: Custom title. You must specify a custom title. For example, when the title is a button

4. FEATURE_INDETERMINATE_PROGRESS: uncertain progress

5. FEATURE_LEFT_ICON: icon on the left of the title bar

6. FEATURE_NO_TITLE: Wu title

7. FEATURE_OPTIONS_PANEL: enables the option panel function. It is enabled by default.

8. FEATURE_PROGRESS: Progress indicator Function

9. FEATURE_RIGHT_ICON: icon on the right of the title bar

The enumerated constants above are your reference.

Next let's take a look at the custom title.

Let's see the result diagram first.

The Code is as follows:

Import android. app. Activity;
Import android. OS. Bundle;
Import android. view. View;
Import android. view. Window;
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}
}

The above two lines are very important, and must appear in the Code strictly in the above sequence. That is:

RequestWindowFeature (Window. FEATURE_CUSTOM_TITLE); must appear in super. onCreate (savedInstanceState);, before setContentView (R. layout. main. This means to tell the system that the program should define its own Titlebar;

GetWindow (). setFeatureInt (Window. FEATURE_CUSTOM_TITLE, R. layout. title); it must appear after setContentView, which means to tell the system that the custom layout is R. layout. title (that is, the titlebar we wrote earlier. xml)

Additional:

Main. xml

Android: layout_width = "fill_parent"
Android: layout_height = "fill_parent"
Android: orientation = "vertical">


Android: layout_width = "fill_parent"
Android: layout_height = "wrap_content"
Android: text = "@ string/hello"/>

Title. xml

Android: layout_width = "match_parent"
Android: layout_height = "match_parent"
Android: orientation = "horizontal"
>


Android: layout_width = "wrap_content"
Android: layout_height = "match_parent"
Android: textColor = "# FF0000"
Android: text = "this is my custom title"
/>

Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: text = "add"
Android: onClick = "add"
/>