Android程序窗体显示：requestWindowFeature()

[size=large]本文围绕以下五个部分展开： [/size]

[size=large]一、requestWindowFeature()[/size]
[size=large]二、FEATURE_CUSTOM_TITLE：自定义标题[/size]
[size=large]三、FEATURE_INDETERMINATE_PROGRESS[/size]
[size=large]四、FEATURE_LEFT_ICON[/size]
[size=large]五、FEATURE_NO_TITLE[/size]


[size=large]一、requestWindowFeature()[/size]

[size=medium]我们在开发Android应用程序时经常会需要软件全屏显示、自定义标题（使用按钮等控件）或其他的需求，因此需要掌握Android应用程序窗体显示的方法。[/size]

[size=medium]一个重要方法就是：requestWindowFeature(featrueId)。它的功能是启用窗体的扩展特性，参数是Window类中定义的常量。[/size]

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[size=large]二、FEATURE_CUSTOM_TITLE：自定义标题[/size]

// 自定义标题。当需要自定义标题时必须指定。如：标题是一个按钮时
        requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
        setContentView(R.layout.activity_main);
        getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.customtitle);

[size=medium]customtitle.xml。[/size]

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">

    <ImageView android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_launcher"/>
    <TextView android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="文本" />

</LinearLayout>

[align=center][/align]


[size=large]三、FEATURE_INDETERMINATE_PROGRESS[/size]

requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.activity_main);
        getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, R.layout.progress);
        // 必须得加上否则显示不出效果 可以通过这个在以后设置显示或隐藏
        setProgressBarIndeterminateVisibility(true);

[size=medium]progress.xml。[/size]

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <ProgressBar android:id="@+id/progress"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        style="?android:attr/progressBarStyleSmallTitle">

    </ProgressBar>

</LinearLayout>

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[size=large]四、FEATURE_LEFT_ICON[/size]

requestWindowFeature(Window.FEATURE_LEFT_ICON);
        setContentView(R.layout.activity_main);
        getWindow().setFeatureInt(Window.FEATURE_LEFT_ICON, R.mipmap.ic_launcher);

[align=center][/align]


[size=large]五、FEATURE_NO_TITLE[/size]

requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        // 加上这句设置为全屏 不加则只隐藏title  
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);

[align=center][/align]


[size=medium]整理时参考：[/size]
[size=medium][color=red]http://www.cnblogs.com/salam/archive/2010/11/30/1892143.html[/color][/size]
[size=medium][color=red]http://zhanhao.iteye.com/blog/1174914[/color][/size]