Android(安卓)沉浸式全屏（StatusBar,NavigationBar）

在android:fitsSystemWindows="true"在沉浸式布局下设置

packagecom.ph.demo.test.two;

importandroid.app.Activity;

importandroid.content.Context;

importandroid.content.res.Resources;

importandroid.graphics.Color;

importandroid.graphics.Rect;

importandroid.os.Build;

importandroid.os.Bundle;

importandroid.support.v7.app.AppCompatActivity;

importandroid.util.Log;

importandroid.view.View;

importandroid.view.ViewConfiguration;

importandroid.view.ViewTreeObserver;

importandroid.view.Window;

importandroid.view.WindowManager;

importandroid.widget.Button;

importandroid.widget.ListView;

importandroid.widget.RelativeLayout;

importandroid.widget.SimpleAdapter;

importandroid.widget.TextView;

importandroid.widget.Toast;

importcom.ph.demo.test.R;

importcom.ph.demo.test.ViewUtils;

importjava.lang.reflect.Field;

importjava.lang.reflect.Method;

importjava.util.ArrayList;

importjava.util.List;

import staticcom.ph.demo.test.ViewUtils.TAG;

public classMainActivityTwoextendsActivity {

ViewdecorView;

//Bar布局监听器

ViewTreeObserver.OnGlobalLayoutListeneronGlobalLayoutListener;

//记录上一次底部的间距

intbottomSign=0;

@Override

protected voidonCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

getWindow().requestFeature(Window.FEATURE_NO_TITLE);

if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.LOLLIPOP) {

Window window = getWindow();

window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS

| WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);

window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN

| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION

| View.SYSTEM_UI_FLAG_LAYOUT_STABLE);

window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);

window.setStatusBarColor(Color.TRANSPARENT);

// window.setNavigationBarColor(Color.TRANSPARENT);

}else{

getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

}

setContentView(R.layout.activity_main_two);

decorView= getWindow().getDecorView();

// final TextView textView = (TextView) findViewById(R.id.tv_hide);

finalTextView textView = (TextView) findViewById(R.id.tv_hide);

Button navHide = (Button) findViewById(R.id.btn_nav_hide);

navHide.setOnClickListener(newView.OnClickListener() {

@Override

public voidonClick(View view) {

toggleHideyBar();

}

});

ListView listView = (ListView) findViewById(R.id.lv_info);

List list =newArrayList<>();

for(inti =0;i <30;i++) {

list.add("String "+ i);

}

twoAdapter twoAdapter =newtwoAdapter();

twoAdapter.initAdapter(this,list);

listView.setAdapter(twoAdapter);

ViewUtils.setViewGroupHeightBasedOnChildren(listView);

finalRelativeLayout.LayoutParams olp = (RelativeLayout.LayoutParams) textView.getLayoutParams();

addOnSoftKeyBoardVisibleListener(newIKeyBoardVisibleListener() {

@Override

public voidonSoftKeyBoardVisible(intwindowBottom) {

olp.setMargins(0,0,0,windowBottom);

textView.setLayoutParams(olp);

}

});

}

interfaceIKeyBoardVisibleListener {

voidonSoftKeyBoardVisible(intwindowBottom);

}

public void addOnSoftKeyBoardVisibleListener(finalIKeyBoardVisibleListener listener) {

onGlobalLayoutListener=newViewTreeObserver.OnGlobalLayoutListener() {

@Override

public voidonGlobalLayout() {

Rect rect =newRect();

decorView.getWindowVisibleDisplayFrame(rect);

//计算出可见屏幕的高度

intdisplayHight = rect.bottom- rect.top;

//获得屏幕整体的高度

inthight =decorView.getHeight();

//获得键盘高度

intkeyboardHeight = hight - displayHight - getStatusBarHeight();

if(bottomSign!= keyboardHeight) {

bottomSign= keyboardHeight;

listener.onSoftKeyBoardVisible(keyboardHeight);

}

};

decorView.getViewTreeObserver().addOnGlobalLayoutListener(onGlobalLayoutListener);

}

private static intgetNavigationBarHeight(Context context) {

intnavigationBarHeight =0;

Resources rs = context.getResources();

intid = rs.getIdentifier("navigation_bar_height","dimen","android");

if(id >0&&hasNavBar(context)) {

navigationBarHeight = rs.getDimensionPixelSize(id);

}

returnnavigationBarHeight;

}

/**

*检查是否存在虚拟按键栏

*@paramcontext

*@return

public static booleanhasNavBar(Context context) {

Resources res = context.getResources();

//这种方式一定要注意写法要正确，内部应该是通过反射去调用的。

intresourceId = res.getIdentifier("config_showNavigationBar","bool","android");

if(resourceId !=0) {

booleanhasNav = res.getBoolean(resourceId);

// check override flag

String sNavBarOverride =getNavBarOverride();

if("1".equals(sNavBarOverride)) {

hasNav =false;

}else if("0".equals(sNavBarOverride)) {

hasNav =true;

}

returnhasNav;

}else{// fallback

return!ViewConfiguration.get(context).hasPermanentMenuKey();

}

/**

*判断虚拟按键栏是否重写

*@return

private staticStringgetNavBarOverride() {

String sNavBarOverride =null;

if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT) {

try{

Class c = Class.forName("android.os.SystemProperties");

Method m = c.getDeclaredMethod("get",String.class);

m.setAccessible(true);

sNavBarOverride = (String) m.invoke(null,"qemu.hw.mainkeys");

}catch(Throwable e) {

}

returnsNavBarOverride;

}

/**

*获取顶部状态栏的高度

*@return

private intgetStatusBarHeight() {

Class c =null;

Object obj =null;

Field field =null;

intx =0,sbar =0;

try{

c = Class.forName("com.android.internal.R$dimen");

obj = c.newInstance();

field = c.getField("status_bar_height");

x = Integer.parseInt(field.get(obj).toString());

sbar =this.getResources().getDimensionPixelSize(x);

}catch(Exception e1) {

e1.printStackTrace();

}

returnsbar;

}

/**

*隐藏和显示顶部底部状态栏

*@return

public voidtoggleHideyBar() {

intuiOptions = getWindow().getDecorView().getSystemUiVisibility();

intnewUiOptions = uiOptions;

booleanisImmersiveModeEnabled =

((uiOptions | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY) == uiOptions);

if(isImmersiveModeEnabled) {

Log.i(TAG,"Turning immersive mode mode off. ");

}else{

Log.i(TAG,"Turning immersive mode mode on.");

}

// Navigation bar hiding: Backwards compatible to ICS.

if(Build.VERSION.SDK_INT>=14) {

newUiOptions ^= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;

}

// Status bar hiding: Backwards compatible to Jellybean

// if (Build.VERSION.SDK_INT >= 16) {

// newUiOptions ^= View.SYSTEM_UI_FLAG_FULLSCREEN;

// }

// Immersive mode: Backward compatible to KitKat.

// Note that this flag doesn't do anything by itself, it only augments the behavior

// of HIDE_NAVIGATION and FLAG_FULLSCREEN. For the purposes of this sample

// all three flags are being toggled together.

// Note that there are two immersive mode UI flags, one of which is referred to as "sticky".

// Sticky immersive mode differs in that it makes the navigation and status bars

// semi-transparent, and the UI flag does not get cleared when the user interacts with

// the screen.

if(Build.VERSION.SDK_INT>=18) {

newUiOptions ^= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;

}

getWindow().getDecorView().setSystemUiVisibility(newUiOptions);

}

@Override

protected voidonDestroy() {

super.onDestroy();

decorView.getViewTreeObserver().removeOnGlobalLayoutListener(onGlobalLayoutListener);

}

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