一、背景介绍
首先介绍关于adjustSize与adjustpan
在manifest文件设置activity的windowSoftInputMode设置为 adjustPan 或者adjustResize
adjustPan会在软键盘弹出的时候平推整个界面,整个界面的大小不变的。缺点: 你编辑的部分会上弹到软键盘上面,但是会造成不可以拖拉,如果编辑的内容下面还有view,你想要操作的话必须先关闭软键盘
adjustResize则是会调整大小,以便为屏幕上的软键盘腾出空间。但是在全屏/沉浸式状态栏模式下是不可用的
二、解决方式
安卓提供的adjustResize在全屏模式下不可用,就只能采用其他方式,谷歌上的大神采取的方式是根据app可展示区域的大小动态更改内容的大小,用scrollview包裹住content,这样就可以自己滑动做到不遮挡】
tips: 根目录必须用ScrollView包裹,不然展示区域变小后无法滑动,相当于没用 另外处理滑动冲突可以采用nestScrollView
这个代码考虑到了以下几种情况:
①有实体底部导航按钮的(oppo r9) ②没有实体按钮但是开启虚拟底部导航按钮 (三星s8) ③没有实体按钮但是关闭虚拟底部导航按钮的(红米k30) ④三的基础上,但是代码运行却反馈有虚拟按钮的(oppo findx)
(其实难度主要在于如何判断得出底部导航按钮的高度和有无,需要对三星特别处理)
直接上代码:
public class AndroidBug5497Workaround {
// For more information, see https://code.google.com/p/android/issues/detail?id=5497
// To use this class, simply invoke assistActivity() on an Activity that already has its content view set.
public static void assistActivity (Activity activity) {
new AndroidBug5497Workaround(activity);
}
private View mChildOfContent;
private int usableHeightPrevious;
private FrameLayout.LayoutParams frameLayoutParams;
Activity activity;
private AndroidBug5497Workaround(Activity activity) {
this.activity =activity;
FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
mChildOfContent = content.getChildAt(0);
mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
public void onGlobalLayout() {
possiblyResizeChildOfContent();
}
});
frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
}
private void possiblyResizeChildOfContent() {
int usableHeightNow = computeUsableHeight();
if (usableHeightNow != usableHeightPrevious) {
int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();
int heightDifference = usableHeightSansKeyboard - usableHeightNow;
if (heightDifference > (usableHeightSansKeyboard/4)) {
// keyboard probably just became visible
frameLayoutParams.height = usableHeightSansKeyboard - heightDifference+ getStatusBarHeight();
} else {
// keyboard probably just became hidden
frameLayoutParams.height = usableHeightSansKeyboard-getNavigationBarHeight();
}
mChildOfContent.setBottom(frameLayoutParams.height);
mChildOfContent.requestLayout();
usableHeightPrevious = usableHeightNow;
}
}
private int computeUsableHeight() {
Rect r = new Rect();
mChildOfContent.getWindowVisibleDisplayFrame(r);
return (r.bottom - r.top);
}
public int getStatusBarHeight(){
int result = 0;
int resourceId = ContextUtils.getApplicationContext().getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
result = ContextUtils.getApplicationContext().getResources().getDimensionPixelSize(resourceId);
}
return result;
}
/**
* 获取底部虚拟导航栏的高度
* @return
*/
public int getNavigationBarHeight() {
int height = 0;
//屏幕实际尺寸
DisplayMetrics dm = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getRealMetrics(dm);
int phoneHeight = dm.heightPixels;
if (isNavigationBarExist()) {
Resources resources =activity.getResources();
int resourceId = resources.getIdentifier("navigation_bar_height",
"dimen", "android");
if (resourceId > 0) {
//获取NavigationBar的高度
height = resources.getDimensionPixelSize(resourceId);
}
}
if (height > 0){
//处理全屏模式下,部分手机isNavigationBarExist()始终返回true,NavigationBar的高度
int diffValue = (DensityUtils.getScreenHeight(ContextUtils.getApplicationContext()) + height) - phoneHeight;
//这里对三星特别处理,以为三星机会把状态栏高度算入真正显示高度,
//不过也可以理解,毕竟我们是全屏模式
if(!"SAMSUNG".equalsIgnoreCase(Build.MANUFACTURER)){
diffValue+= getStatusBarHeight();
}
if (diffValue > 0){
height -= diffValue;
}
}
return height;
}
/**
* 检测底部虚拟导航栏是否存在
*有很多教程写通过读取系统参数,无效,因为有些有参数但是不展示
* @return
*/
public boolean isNavigationBarExist(){
ViewGroup vp = (ViewGroup) activity.getWindow().getDecorView();
if (vp != null) {
for (int i = 0; i < vp.getChildCount(); i++) {
vp.getChildAt(i).getContext().getPackageName();
if (vp.getChildAt(i).getId() != View.NO_ID
&& "navigationBarBackground".equals(activity.getResources().getResourceEntryName(vp.getChildAt(i).getId()))) {
return true;
}
}
}
return false;
}
}
使用方式:
AndroidBug5497Workaround.assistActivity(你的activity)
感谢博主的分享,原文来自:安卓软键盘遮挡输入框+沉浸式+adjustsize失效+适配 (又名5497bug)_只会helloworld的博客-CSDN博客