Android——requestWindowFeature

requestWindowFeature可以设置的值有：
1.DEFAULT_FEATURES：系统默认状态，一般不需要指定
2.FEATURE_CONTEXT_MENU：启用ContextMenu，默认该项已启用，一般无需指定
3.FEATURE_CUSTOM_TITLE：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
4.FEATURE_INDETERMINATE_PROGRESS：不确定的进度
5.FEATURE_LEFT_ICON：标题栏左侧的图标
6.FEATURE_NO_TITLE：无标题
7.FEATURE_OPTIONS_PANEL：启用“选项面板”功能，默认已启用。
8.FEATURE_PROGRESS：进度指示器功能
9.FEATURE_RIGHT_ICON:标题栏右侧的图标

示例代码：

public class WindowFeatureDemoActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// requestWindowFeature();的取值
// 1.DEFAULT_FEATURES：系统默认状态，一般不需要指定
// 2.FEATURE_CONTEXT_MENU：启用ContextMenu，默认该项已启用，一般无需指定
// 3.FEATURE_CUSTOM_TITLE：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
// 4.FEATURE_INDETERMINATE_PROGRESS：不确定的进度
// 5.FEATURE_LEFT_ICON：标题栏左侧的图标
// 6.FEATURE_NO_TITLE：无标题
// 7.FEATURE_OPTIONS_PANEL：启用“选项面板”功能，默认已启用。
// 8.FEATURE_PROGRESS：进度指示器功能
// 9.FEATURE_RIGHT_ICON:标题栏右侧的图标
// ========================FEATURE_INDETERMINATE_PROGRESS：不确定的进度
// showFEATURE_INDETERMINATE_PROGRESS();
// // =====================FEATURE_CUSTOM_TITLE
// showFEATURE_CUSTOM_TITLE();
// // ======================== FEATURE_LEFT_ICON：标题栏左侧的图标
// showFEATURE_LEFT_ICON();
// // ======================FEATURE_NO_TITLE
// showFEATURE_NO_TITLE();
// =================================FEATURE_PROGRESS
showFEATURE_PROGRESS();
}
private void showFEATURE_INDETERMINATE_PROGRESS() {
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.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);
}
private void showFEATURE_CUSTOM_TITLE() {
// 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.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.customtitle);
}
private void showFEATURE_LEFT_ICON()
{
requestWindowFeature(Window.FEATURE_LEFT_ICON);
setContentView(R.layout.main);
getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,
R.drawable.icon);
}
private void showFEATURE_NO_TITLE()
{
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.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);
}
private void showFEATURE_PROGRESS()
{
requestWindowFeature(Window.FEATURE_PROGRESS);
setProgressBarVisibility(true);
setContentView(R.layout.main);
setTitle("");
getWindow().setFeatureInt(Window.FEATURE_PROGRESS, Window.PROGRESS_VISIBILITY_ON);
// 通过线程来改变ProgressBar的值
new Thread(new Runnable() {
public void run() {
for (int i = 0; i < 10; i++) {
try {
Thread.sleep(1000);
Message m = new Message();
m.what = (i + 1) * 20;
WindowFeatureDemoActivity.this.myMessageHandler.sendMessage(m);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}).start();
}
Handler myMessageHandler = new Handler() {
// @Override
public void handleMessage(Message msg) {
// 设置标题栏中前景的一个进度条进度值
setProgress(100 * msg.what);
// 设置标题栏中后面的一个进度条进度值
setSecondaryProgress(100 * msg.what + 10);
super.handleMessage(msg);
}
};
}

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