Android 弹出软键盘所遇到的坑及解决方法
作者:struggle323 时间:2022-06-03 23:41:47
demo下载
重要代码:
//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();
}
}
备注:
全屏模式:
1、通过style或者setFlags(…)来设置全屏;
2、AndroidManifest.xml中activity设置:android:windowSoftInputMode=”adjustResize”;
3、此layout必须作为布局的最外层layout;
4、一定要在布局中添加一个view,如下:
<!--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" />
5、通过setAdjustView(View view)来设置需要调整的view;
6、在全屏模式下,输入框开始是未显示的,直到弹出软键盘,才会显示输入框。因为如果输入框一开始就显示,那软键盘就会根据输入框来弹出,且输入框在底部,那就可能造成把整个view顶上去。所以这时我们应该实现OnInputViewVisibleListener这个接口来控制输入框的显示与隐藏。
非全屏模式
1、AndroidManifest.xml中activity设置:android:windowSoftInputMode=”adjustResize
”;
2、此layout必须作为布局的最外层layout;
3、通过setAdjustView(View view)
来设置需要调整的view;
4、如果需要控制输入框的显示与隐藏,就实现OnInputViewVisibleListener这个接口。
以上所述是小编给大家介绍的Android 弹出软键盘所遇到的坑及解决方法网站的支持!
来源:http://blog.csdn.net/struggle323/article/details/54708240
标签:android,弹出软键盘
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