动态实现隐藏标题栏

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:fadingEdgeLength="0sp"
>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/myTitleBarLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>

<TextView
android:id="@+id/myTitleBarTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/app_name"
android:paddingTop="4dip"
android:paddingBottom="4dip"
android:paddingLeft="6dip"
android:textStyle="bold"
android:shadowColor="#BB000000"
android:shadowRadius="3.0"
android:shadowDy=".25"

/>

<View
android:layout_width="fill_parent"
android:layout_height="1dip"
android:background="#CCEEEEEE"
android:padding="10dip"
/>
</LinearLayout>

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
>



<Button android:id="@+id/toggle_title_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Toggle Title"
/>
</ScrollView>
</LinearLayout>

然后

package com.test.HelloGridView;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

public class HelloGridView extends Activity
{
public void onCreate(Bundle savedInstanceState)
{
requestWindowFeature(Window.FEATURE_NO_TITLE);

super.onCreate(savedInstanceState);
setContentView(R.layout.main);

TextView tv = (TextView)this.findViewById(R.id.myTitleBarTextView);
tv.setBackgroundColor(0xFF848284);
tv.setTextColor(0xFFFFFFFF);

Button toggleTitleButton = (Button)this.findViewById(R.id.toggle_title_button);

toggleTitleButton.setOnClickListener( new OnClickListener()
{
@Override
public void onClick(View v)
{
LinearLayout ll = (LinearLayout)findViewById(R.id.myTitleBarLayout);

if(ll.getVisibility() == View.GONE)
{
ll.setVisibility(View.VISIBLE);
}
else
{
ll.setVisibility(View.GONE);
}
}
});
}
}

有时候也可以

通过

private void updateFullscreenStatus(bUseFullscreen)
{
if(bUseFullscreen)
{
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
}
else
{
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
}

m_contentView.requestLayout();
}
通过两种方法就可以去掉状态栏和标题栏了这个用在游戏中比较好.，上述方法是通过标题栏实现的

3.通过主题实现隐藏状态栏和标题栏

android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

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