在日常开发中，我们经常会遇到viewpager配合fragment的情况；这些fragment有的要求顶进状态栏，就像这样
也可能会遇到顶部是标题栏，不允许顶进状态栏；在每个fragment中处理状态栏会出现这样的情况
即使设置了android:fitsSystemWindows="true" android:clipToPadding="true"这两个属性；在快速切换的时候吹出现短暂上图的情况，这里想到一种折衷的方案：就是activity整体是透明的，在每个fragment顶部写一个view动态设置view的高度来达到效果，下面直接贴代码：
先贴工具类 这个工具类可以快速设置状态栏颜色和透明状态栏
package com.example.mylibrary.utils;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Build;
import android.support.v4.view.ViewCompat;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
/**
* 透明状态栏
*
* 使用透明状态栏得时候 如果有标题 需设置top属性 高度为22dp
*/
public class StatusBarCompat {
public static int navigationHeight =0;
private static final int COLOR_TRANSLUCENT = Color.parseColor("#00000000");
public static final int DEFAULT_COLOR_ALPHA =112;
/**
* set statusBarColor
* @param statusColor color
* @param alpha 0 - 255
*/
public static void setStatusBarColor(Activity activity, int statusColor, int alpha) {
setStatusBarColor(activity, calculateStatusBarColor(statusColor, alpha));
}
public static void setStatusBarColor(Activity activity, int statusColor) {
Window window = activity.getWindow();
ViewGroup mContentView = (ViewGroup) activity.findViewById(Window.ID_ANDROID_CONTENT);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
//First translucent status bar.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
//After LOLLIPOP not translucent status bar
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
//Then call setStatusBarColor.
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
window.setStatusBarColor(statusColor);
//set child View not fill the system window
View mChildView = mContentView.getChildAt(0);
if (mChildView !=null) {
ViewCompat.setFitsSystemWindows(mChildView, true);
}
}else {
ViewGroup mDecorView = (ViewGroup) window.getDecorView();
if (mDecorView.getTag() !=null && mDecorView.getTag()instanceof Boolean && (Boolean)mDecorView.getTag()) {
//if has add fake status bar view
window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
View mStatusBarView = mDecorView.getChildAt(0);
if (mStatusBarView !=null) {
mStatusBarView.setBackgroundColor(statusColor);
}
}else {
int statusBarHeight =getStatusBarHeight(activity);
//add margin
View mContentChild = mContentView.getChildAt(0);
if (mContentChild !=null) {
window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
ViewCompat.setFitsSystemWindows(mContentChild, false);
FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mContentChild.getLayoutParams();
lp.topMargin += statusBarHeight;
mContentChild.setLayoutParams(lp);
//add fake status bar view
View mStatusBarView =new View(activity);
FrameLayout.LayoutParams layoutParams =new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, statusBarHeight);
layoutParams.gravity = Gravity.TOP;
mStatusBarView.setLayoutParams(layoutParams);
mStatusBarView.setBackgroundColor(statusColor);
mDecorView.addView(mStatusBarView, 0);
mDecorView.setTag(true);
}
}
}
}
}
public static void translucentStatusBar(Activity activity) {
translucentStatusBar(activity, false);
}
/**
* change to full screen mode
* @param hideStatusBarBackground hide status bar alpha Background when SDK > 21, true if hide it
*/
public static void translucentStatusBar(Activity activity, boolean hideStatusBarBackground) {
Window window = activity.getWindow();
ViewGroup mContentView = (ViewGroup) activity.findViewById(Window.ID_ANDROID_CONTENT);
//set child View not fill the system window
View mChildView = mContentView.getChildAt(0);
if (mChildView !=null) {
ViewCompat.setFitsSystemWindows(mChildView, false);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
int statusBarHeight =getStatusBarHeight(activity);
//First translucent status bar.
window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
//After LOLLIPOP just set LayoutParams.
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
if (hideStatusBarBackground) {
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
window.setStatusBarColor(COLOR_TRANSLUCENT);
}else {
window.setStatusBarColor(calculateStatusBarColor(COLOR_TRANSLUCENT, DEFAULT_COLOR_ALPHA));
}
//must call requestApplyInsets, otherwise it will have space in screen bottom
if (mChildView !=null) {
ViewCompat.requestApplyInsets(mChildView);
}
}else {
ViewGroup mDecorView = (ViewGroup) window.getDecorView();
if (mDecorView.getTag() !=null && mDecorView.getTag()instanceof Boolean && (Boolean)mDecorView.getTag()) {
mChildView = mDecorView.getChildAt(0);
//remove fake status bar view.
mContentView.removeView(mChildView);
mChildView = mContentView.getChildAt(0);
if (mChildView !=null) {
FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mChildView.getLayoutParams();
//cancel the margin top
if (lp !=null && lp.topMargin >= statusBarHeight) {
lp.topMargin -= statusBarHeight;
mChildView.setLayoutParams(lp);
}
}
mDecorView.setTag(false);
}
}
}
}
//Get status bar height
public static int getStatusBarHeight(Context context) {
int result =0;
int resId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resId >0) {
result = context.getResources().getDimensionPixelOffset(resId);
}
return result;
}
//Get alpha color
private static int calculateStatusBarColor(int color, int alpha) {
float a =1 - alpha /255f;
int red = color >>16 &0xff;
int green = color >>8 &0xff;
int blue = color &0xff;
red = (int) (red * a +0.5);
green = (int) (green * a +0.5);
blue = (int) (blue * a +0.5);
return 0xff <<24 | red <<16 | green <<8 | blue;
}
/**
* 改变魅族的状态栏字体为黑色，要求FlyMe4以上
*/
private static void processFlyMe(boolean isLightStatusBar, Activity activity) {
WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
try {
Class instance = Class.forName("android.view.WindowManager$LayoutParams");
int value = instance.getDeclaredField("MEIZU_FLAG_DARK_STATUS_BAR_ICON").getInt(lp);
Field field = instance.getDeclaredField("meizuFlags");
field.setAccessible(true);
int origin = field.getInt(lp);
if (isLightStatusBar) {
field.set(lp, origin | value);
}else {
field.set(lp, (~value) & origin);
}
}catch (Exception ignored) {
ignored.printStackTrace();
}
}
/**
* 改变小米的状态栏字体颜色为黑色, 要求MIUI6以上 lightStatusBar为真时表示黑色字体
*/
private static void processMIUI(boolean lightStatusBar, Activity activity) {
Class clazz = activity.getWindow().getClass();
try {
int darkModeFlag;
Class layoutParams = Class.forName("android.view.MiuiWindowManager$LayoutParams");
Field field = layoutParams.getField("EXTRA_FLAG_STATUS_BAR_DARK_MODE");
darkModeFlag = field.getInt(layoutParams);
Method extraFlagField = clazz.getMethod("setExtraFlags",int.class,int.class);
extraFlagField.invoke(activity.getWindow(), lightStatusBar? darkModeFlag :0, darkModeFlag);
}catch (Exception ignored) {
ignored.printStackTrace();
}
}
private static final StringKEY_MIUI_VERSION_CODE ="ro.miui.ui.version.code";
private static final StringKEY_MIUI_VERSION_NAME ="ro.miui.ui.version.name";
private static final StringKEY_MIUI_INTERNAL_STORAGE ="ro.miui.internal.storage";
/**
* 判断手机是否是小米
* @return
*/
public static boolean isMIUI() {
try {
final BuildProperties prop = BuildProperties.newInstance();
return prop.getProperty(KEY_MIUI_VERSION_CODE, null) !=null
|| prop.getProperty(KEY_MIUI_VERSION_NAME, null) !=null
|| prop.getProperty(KEY_MIUI_INTERNAL_STORAGE, null) !=null;
}catch (final IOException e) {
return false;
}
}
/**
* 判断手机是否是魅族
* @return
*/
public static boolean isFlyme() {
try {
// Invoke Build.hasSmartBar()
final Method method = Build.class.getMethod("hasSmartBar");
return method !=null;
}catch (final Exception e) {
return false;
}
}
/**
* 设置状态栏文字色值为深色调
* @param useDart 是否使用深色调
* @param activity
*/
public static void setStatusTextColor(boolean useDart, Activity activity) {
// if (isFlyme()) {
// processFlyMe(useDart, activity);
// } else if (isMIUI()) {
// processMIUI(useDart, activity);
// } else {
if (useDart) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
activity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
}
}else {
activity.getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
}
activity.getWindow().getDecorView().findViewById(android.R.id.content).setPadding(0, 0, 0, StatusBarCompat.navigationHeight);
}
// }
}
在状态栏不为透明的时候；动态设置view的高度为状态栏的高度，来顶进状态栏同时可以设置view的颜色，以此来代替状态栏的颜色；在状态栏为透明的时候view的高度默认为0，即图片可以直接伸进状态栏里面；
View view = aa.findViewById(R.id.view);
LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) view.getLayoutParams();
view.setBackgroundColor(Color.YELLOW);
layoutParams.height = StatusBarCompat.getStatusBarHeight(getActivity()); //这里拿到状态栏的高度
Log.i(TAG, "onCreateView: "+StatusBarCompat.getStatusBarHeight(getActivity()));
view.setLayoutParams(layoutParams);//设置view高度