ScrollView嵌套EditText时ScrollView无法滑动问题

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在setContentView()后面加上下面的代码
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

inal ScrollView scrollView= (ScrollView) findViewById(R.id.scrollView);
        final View decorView=getWindow().getDecorView();
        decorView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                Rect rect=new Rect();
                decorView.getWindowVisibleDisplayFrame(rect);
                int screenHeight = decorView.getRootView().getHeight();
                int heightDifference = screenHeight-rect.bottom;//计算软键盘占有的高度  = 屏幕高度 - 视图可见高度
                LinearLayout.LayoutParams layoutParams= (LinearLayout.LayoutParams) scrollView.getLayoutParams();
                layoutParams.setMargins(0,0,0,heightDifference);//设置ScrollView的marginBottom的值为软键盘占有的高度即可
                scrollView.requestLayout();
            }
        });