1.最近项目遇到了webView中使用输入框，但是输入框被遮挡的问题，于是上网百度了一下，大佬已经给出了解决办法。我只是在基础上做些适配调整，仅供记录！！！！！！！！！！！
public class AndroidBug5497Workaround {
public static void assistActivity(Activity activity) {
new AndroidBug5497Workaround(activity);
}
private Activityactivity;
private ViewmChildOfContent;
private int usableHeightPrevious;
private FrameLayout.LayoutParamsframeLayoutParams;
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) {
Rect frame =new Rect();
int usableHeightSansKeyboard =mChildOfContent.getRootView().getHeight();
//这个判断是为了解决19之前的版本不支持沉浸式状态栏导致布局显示不完全的问题
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
int statusBarHeight = frame.top;
usableHeightSansKeyboard -= statusBarHeight;
}
int heightDifference = usableHeightSansKeyboard - usableHeightNow;
if (heightDifference > (usableHeightSansKeyboard /4)) {
// keyboard probably just became visible
frameLayoutParams.height = usableHeightSansKeyboard - heightDifference - (BarUtils.isNavBarVisible(activity) ? BarUtils.getNavBarHeight() :0);
}else {
// keyboard probably just became hidden
frameLayoutParams.height = usableHeightSansKeyboard - (BarUtils.isNavBarVisible(activity) ? BarUtils.getNavBarHeight() :0);
}
mChildOfContent.requestLayout();
usableHeightPrevious = usableHeightNow;
}
}
@SuppressLint("ObsoleteSdkInt")
private int computeUsableHeight() {
Rect frame =new Rect();
activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
int statusBarHeight = frame.top;
Rect r =new Rect();
mChildOfContent.getWindowVisibleDisplayFrame(r);
//这个判断是为了解决19之后的版本在弹出软键盘时，键盘和推上去的布局（adjustResize）之间有黑色区域的问题
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
return (r.bottom - r.top) + statusBarHeight;
}
return (r.bottom - r.top);
}
}
2.解决问题，处理手机导航栏被遮挡
