Android 弹出软键盘所遇到的坑及解决方法

//1、此layout作为最外层的layout；//2、设置需要调整的view: setAdjustView(View view);//3、如果需要控制输入框的显示与隐藏，可以实现OnInputViewVisibleListener接口；public class SoftInputAdjustLayout extends RelativeLayout {  private static final String TAG = SoftInputAdjustLayout.class.getSimpleName();  private View adjustView;  public SoftInputAdjustLayout(Context context) {    this(context, null);  }  public SoftInputAdjustLayout(Context context, AttributeSet attrs) {    this(context, attrs, 0);  }  public SoftInputAdjustLayout(Context context, AttributeSet attrs, int defStyleAttr) {    super(context, attrs, defStyleAttr);    this.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {      @Override      public void onGlobalLayout() {        try {          Rect r = new Rect();          getWindowVisibleDisplayFrame(r);          int heightDiff = getRootView().getHeight() - (r.bottom - r.top);          if (heightDiff > 100) {            if (onInputViewVisibleListener != null) {              onInputViewVisibleListener.onShowInputView();            }          } else {            if (onInputViewVisibleListener != null) {              onInputViewVisibleListener.onHideInputView();            }          }        } catch (Exception e) {          e.printStackTrace();        }      }    });  }  /**   * 需要调整的view   *   * @param adjustView   */  public void setAdjustView(View adjustView) {    this.adjustView = adjustView;  }  @Override  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {    if (adjustView != null) {      Rect rect = new Rect();      getWindowVisibleDisplayFrame(rect);      int totalHeight = getHeight();      int nowHeight = rect.bottom - rect.top;      int keyBoardHeight = totalHeight - nowHeight;      if (keyBoardHeight > totalHeight / 4) {        super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(totalHeight, MeasureSpec.EXACTLY));        LayoutParams params = (LayoutParams) adjustView.getLayoutParams();        params.bottomMargin = keyBoardHeight;      } else {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);        LayoutParams params = (LayoutParams) adjustView.getLayoutParams();        params.bottomMargin = 0;      }    } else {      super.onMeasure(widthMeasureSpec, heightMeasureSpec);    }  }  private OnInputViewVisibleListener onInputViewVisibleListener;  public void setOnInputViewVisibleListener(OnInputViewVisibleListener listener) {    onInputViewVisibleListener = listener;  }  public interface OnInputViewVisibleListener {    void onShowInputView();    void onHideInputView();  }}

 <!--此view用于获取焦点，当软件盘弹出时，根据此view来弹出，而此view在最顶部，且大小为0，所以软件盘弹出，不会把背景顶上去-->  <View    android:layout_width="0px"    android:layout_height="0px"    android:focusable="true" android:focusableInTouchMode="true" />