private LinearLayout logo_layout;
  private ImageView iv_logo;
  private int sh;
  private int layoutH;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    logo_layout=(LinearLayout) findViewById(R.id.logo_layout);
    iv_logo=(ImageView) findViewById(R.id.iv_logo);
    //獲取屏幕的高度
    DisplayMetrics dm = new DisplayMetrics();
    WindowManager windowMgr = (WindowManager)getSystemService(Context.WINDOW_SERVICE);
    windowMgr.getDefaultDisplay().getMetrics(dm);
    sh = dm.heightPixels;
    logo_layout.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

      // 當layout執(zhí)行結(jié)束后回調(diào)此方法
      @Override
      public void onGlobalLayout() {
        logo_layout.getViewTreeObserver().removeGlobalOnLayoutListener(this);
        layoutH = logo_layout.getHeight();
      }
    });
    //當鍵盤彈起的時候用屏幕的高度減去布局的高度，同時獲取到鍵盤的高度，用鍵盤的高度和剩余的高度做對比
    SoftKeyBoardListener.setListener(MainActivity.this, new OnSoftKeyBoardChangeListener() {

      @Override
      public void keyBoardShow(int height) {
        //鍵盤彈起回調(diào)
        int h=sh-layoutH;
        if(h>height){//高度大于鍵盤的高度
          setLayoutH(80);
        }else{
          //高度小于鍵盤的高度
          int resetH=Math.abs(height+layoutH-sh);
          setLayoutH(resetH);
        }
      }

      @Override
      public void keyBoardHide(int height) {
        //鍵盤隱藏回調(diào)
        setLayoutH(80);
      }
    });   
  }
  /**
   * 重新設置布局高度
   */
  private void setLayoutH(int h){
    LinearLayout.LayoutParams layoutParams = (android.widget.LinearLayout.LayoutParams) iv_logo.getLayoutParams();
    layoutParams.topMargin=dip2px(MainActivity.this, h);
    iv_logo.setLayoutParams(layoutParams);
  }
  /** 
   * 根據(jù)手機的分辨率從 dp 的單位 轉(zhuǎn)成為 px(像素) 
   */ 
  public static int dip2px(Context context,float dpValue) { 
    final float scale =context.getResources().getDisplayMetrics().density; 
    return (int) (dpValue * scale + 0.5f); 
  } 

private View rootView;//activity的根視圖
  int rootViewVisibleHeight;//紀錄根視圖的顯示高度
  private OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener;

  public SoftKeyBoardListener(Activity activity) {
    //獲取activity的根視圖
    rootView = activity.getWindow().getDecorView();

    //監(jiān)聽視圖樹中全局布局發(fā)生改變或者視圖樹中的某個視圖的可視狀態(tài)發(fā)生改變
    rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
      @Override
      public void onGlobalLayout() {
        //獲取當前根視圖在屏幕上顯示的大小
        Rect r = new Rect();
        rootView.getWindowVisibleDisplayFrame(r);
        int visibleHeight = r.height();
        if (rootViewVisibleHeight == 0) {
          rootViewVisibleHeight = visibleHeight;
          return;
        }

        //根視圖顯示高度沒有變化，可以看作軟鍵盤顯示／隱藏狀態(tài)沒有改變
        if (rootViewVisibleHeight == visibleHeight) {
          return;
        }

        //根視圖顯示高度變小超過200，可以看作軟鍵盤顯示了
        if (rootViewVisibleHeight - visibleHeight > 200) {
          if (onSoftKeyBoardChangeListener != null) {
            onSoftKeyBoardChangeListener.keyBoardShow(rootViewVisibleHeight - visibleHeight);
          }
          rootViewVisibleHeight = visibleHeight;
          return;
        }

        //根視圖顯示高度變大超過200，可以看作軟鍵盤隱藏了
        if (visibleHeight - rootViewVisibleHeight > 200) {
          if (onSoftKeyBoardChangeListener != null) {
            onSoftKeyBoardChangeListener.keyBoardHide(visibleHeight - rootViewVisibleHeight);
          }
          rootViewVisibleHeight = visibleHeight;
          return;
        }

      }
    });
  }

  private void setOnSoftKeyBoardChangeListener(OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener) {
    this.onSoftKeyBoardChangeListener = onSoftKeyBoardChangeListener;
  }

  public interface OnSoftKeyBoardChangeListener {
    void keyBoardShow(int height);

    void keyBoardHide(int height);
  }

  public static void setListener(Activity activity, OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener) {
    SoftKeyBoardListener softKeyBoardListener = new SoftKeyBoardListener(activity);
    softKeyBoardListener.setOnSoftKeyBoardChangeListener(onSoftKeyBoardChangeListener);
  }