当界面全屏显示的时候 软键盘弹出的时候scrollview失去作用 不能上滑到底部

        Android中有个Bug，在设置getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);为全屏状态下点击输入框显示键盘时，界面并不会重新渲染调整位置，android:windowSoftInputMode="adjustResize"在FullScreen下没有作用。

       找了很久才找到解决方法，该方法是在Activity onCreate时通过ViewTreeObserver注册GlobalLayoutListener监听，当全局布局改变时会触发该监听。下面是代码部分：

package com.maituo.sdk.util;








import android.app.Activity;




import android.graphics.Rect;




import android.view.View;




import android.view.ViewGroup.LayoutParams;




import android.view.ViewTreeObserver;




import android.widget.FrameLayout;








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 mContent;



    private int usableHeightPrevious;



    private LayoutParams layoutParams;



    public static void assistView(View v){



    	new AndroidBug5497Workaround(v);



    }







    public static void assistActivity (Activity activity) {



        new AndroidBug5497Workaround(activity);



    }







    private AndroidBug5497Workaround(Activity activity){



    	 FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);



    	 mContent = content.getChildAt(0);



    	 addGlobalLayoutListener(mContent);







    }



    //有时通过Activity获取view并不能满足，所以我加了直接传view的一个构造方法满足用到Fragment的情况




    private AndroidBug5497Workaround(View v) {



        //FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);




       // mChildOfContent = content.getChildAt(0);




    	addGlobalLayoutListener(v);







    }







    private void addGlobalLayoutListener(View v){



    	mContent = v;



    	mContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {



            public void onGlobalLayout() {



                possiblyResizeChildOfContent();



            }



        });



    //  LayoutParams放在这里有可能得到的为空




    //  LayoutParams =  mContent.getLayoutParams();




    }







    private void possiblyResizeChildOfContent() {



        int usableHeightNow = computeUsableHeight();



        if (usableHeightNow != usableHeightPrevious) {



        	layoutParams = mContent.getLayoutParams();



            int usableHeightSansKeyboard = mContent.getRootView().getHeight();



            int heightDifference = usableHeightSansKeyboard - usableHeightNow;



            if (heightDifference > (usableHeightSansKeyboard/4)) {



                // keyboard probably just became visible 




            	layoutParams.height = usableHeightSansKeyboard - heightDifference;



            } else {



                // keyboard probably just became hidden




            	layoutParams.height = usableHeightSansKeyboard;



            }



            mContent.requestLayout();



            usableHeightPrevious = usableHeightNow;



        }



    }







    private int computeUsableHeight() {



        Rect r = new Rect();



        mContent.getWindowVisibleDisplayFrame(r);



        return (r.bottom - r.top);



    }







}

只要调用AndroidBug5497Workaround.assistActivity(activity)或AndroidBug5497Workaround.assistView(view)就可以了


来自https://blog.csdn.net/bdemq/article/details/46663153