Android开发解决webView去掉状态栏 软键盘盖住输入框问题

释放双眼,带上耳机,听听看~!

如果项目添加如下代码取消状态栏,webview软键盘会遮住输入框:

        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

新建如下类:

package com.youli.newpaths;
import android.app.Activity;
import android.graphics.Rect;
import android.view.View;
import android.view.ViewTreeObserver;
import android.widget.FrameLayout;
/**
* Created by liutao on 2018/12/28.
*/
public class AndroidBug5497Workaround {
public static void assistActivity(Activity activity) {
new AndroidBug5497Workaround(activity);
}
private View mChildOfContent;
private int                      usableHeightPrevious;
private FrameLayout.LayoutParams frameLayoutParams;
private AndroidBug5497Workaround(Activity activity) {
//拿到当前XML文件的根布局
FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
//监听当前View的状态,进行通知回调,即"软键盘弹出""
mChildOfContent = content.getChildAt(0);
mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
public void onGlobalLayout() {
possiblyResizeChildOfContent();
}
});
frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
}
/**
* 重新设置高度
* <p>
* 把界面高度设置为可用高度
*/
private void possiblyResizeChildOfContent() {
int usableHeightNow = computeUsableHeight();
if (usableHeightNow != usableHeightPrevious) {
// int usableHeightSansKeyboard = activity.getWindowManager().getDefaultDisplay().getHeight();//获取屏幕尺寸,不包括虚拟功能高度 用这个可以完美解决
//findViewById(android.R.id.content).getMeasuredHeight() 也可以解决虚拟按键问题
int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();
int heightDifference = usableHeightSansKeyboard - usableHeightNow;
//排除其他View引起的变化,专注软键盘变化
if (heightDifference > (usableHeightSansKeyboard / 4)) {
// keyboard probably just became visible
frameLayoutParams.height = usableHeightSansKeyboard - heightDifference;
} else {
// keyboard probably just became hidden
frameLayoutParams.height = usableHeightSansKeyboard;
}
mChildOfContent.requestLayout();
usableHeightPrevious = usableHeightNow;
}
}
/**
* 软键盘弹出后,可以显示内容的高度
*
* @return
*/
private int computeUsableHeight() {
Rect r = new Rect();
//这行代码能够获取到去除标题栏和被软键盘挡住的部分,所剩下的矩形区域
mChildOfContent.getWindowVisibleDisplayFrame(r);
//r.top : 标题栏的高度
//屏幕高度-r.bottom : 软键盘的高度
//可用高度(全屏模式) : rect.bottom
//可用高度(非全屏模式) : rect.bottom - rect.top
return (r.bottom - r.top);// 全屏模式下: return r.bottom
}
}

在onCreate里面加上就可以解决:

   AndroidBug5497Workaround.assistActivity(this);

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