封装一个类：软键盘弹出，将控件整体顶上去

软键盘弹起后将整个内容框顶起：

封装一个类“CustomGlobalLayoutListener”

import android.content.Context;
import android.graphics.Rect;
import android.view.View;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;

/**
 * 实现弹出软键盘时 整个布局向上平移,解决遮挡问题
 * 在onCreate中添加监听,在onDestroy中remove监听
 * Created by KingsleyCheng on 2017/4/1.
 */

public class CustomGlobalLayoutListener implements OnGlobalLayoutListener {
    private Context mContext;
    private View mRootView;
    private View mScrollToView;
    private int btnY;

    /**
     * @param context      context
     * @param rootView     可以滚动的布局
     * @param scrollToView 界面上被遮挡的位于最底部的布局(控件)
     */
    public CustomGlobalLayoutListener(Context context, View rootView, View scrollToView) {
        this.mContext = context;
        this.mRootView = rootView;
        this.mScrollToView = scrollToView;
    }

    @Override
    public void onGlobalLayout() {
        Rect rect = new Rect();
        // 获取root在窗体的可视区域
        mRootView.getWindowVisibleDisplayFrame(rect);
        int rootViewHeight = mRootView.getRootView().getHeight();
        // 当前视图最外层的高度减去现在所看到的视图的最底部的y坐标
        int rootInvisibleHeight = rootViewHeight - rect.bottom;
        //软键盘高度
        int heightDifference = rootViewHeight - (rect.bottom - rect.top);
        // 若rootInvisibleHeight高度大于100，则说明当前视图上移了，说明软键盘弹出了
        if (rootInvisibleHeight > 100) {
            //软键盘弹出来的时候
            int[] location = new int[2];
            // 获取scrollToView在窗体的坐标
            mScrollToView.getLocationInWindow(location);

            //btnY的初始值为0，一旦赋过一次值就不再变化
            if (btnY == 0) {
                btnY = location[1];
            }
            int scrollToViewHeight = mScrollToView.getHeight();
            // 计算root滚动高度，使scrollToView在可见区域的底部
            int scrollHeight = (btnY + scrollToViewHeight) - rect.bottom;
            //如果控件所在的当前高度大于软键盘的高度，控件就不上移
            if ((rootViewHeight - location[1] - scrollToViewHeight) <        heightDifference) {
                mRootView.scrollTo(0, scrollHeight);
            }
        } else {
            // 软键盘没有弹出来的时候
            mRootView.scrollTo(0, 0);
        }
    }

}

使用方法：

private CustomGlobalLayoutListener customGlobalLayoutListener;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.activity_create_task);
    customGlobalLayoutListener = new CustomGlobalLayoutListener(this, scrollView, mBtnNextStep);
    scrollView.getViewTreeObserver().addOnGlobalLayoutListener   (customGlobalLayoutListener);
最后在 onDestroy()生命周期里面取消注册，防止内存溢出
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {  

  
  

   
   
scrollView.getViewTreeObserver().removeOnGlobalLayoutListener(customGlobalLayoutListener);  

   
   
} else {  
   
   
scrollView.getViewTreeObserver().removeGlobalOnLayoutListener(customGlobalLayoutListener);  
   
   
}