如图效果
类似于QQ登入界面,软键盘弹出的时候,不遮挡登入按钮,整体的界面在软键盘之上
直接上干货
监听软键盘弹出及收起事件
步骤1。指定windowSoftInputMode =“adjustResize”
在AndroidManifest.xml中相应的Activity设置android：windowSoftInputMode =“adjustResize”，也可以在java代码中设置。
第2步。监听contentView宽高（布局）变化
使用这个帮助类
public class KeyBoardHelper {private Activity activity;private OnKeyBoardStatusChangeListener onKeyBoardStatusChangeListener;private int screenHeight;// 空白高度 = 屏幕高度 - 当前 Activity 的可见区域的高度// 当 blankHeight 不为 0 即为软键盘高度。private int blankHeight = 0;public KeyBoardHelper(Activity activity) {this.activity = activity;screenHeight = activity.getResources().getDisplayMetrics().heightPixels;activity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);if (activity.getRequestedOrientation() != ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) {activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);}}public void onCreate() {View content = activity.findViewById(android.R.id.content);// content.addOnLayoutChangeListener(listener); 这个方法有时会出现一些问题content.getViewTreeObserver().addOnGlobalLayoutListener(onGlobalLayoutListener);}public void onDestory() {View content = activity.findViewById(android.R.id.content);content.getViewTreeObserver().removeOnGlobalLayoutListener(onGlobalLayoutListener);}private OnGlobalLayoutListener onGlobalLayoutListener = new OnGlobalLayoutListener() {@Overridepublic void onGlobalLayout() {Rect rect = new Rect();activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);int newBlankheight = screenHeight - rect.bottom;if (newBlankheight != blankHeight) {if (newBlankheight > blankHeight) {// keyboard popif (onKeyBoardStatusChangeListener != null) {onKeyBoardStatusChangeListener.OnKeyBoardPop(newBlankheight);}} else { // newBlankheight < blankHeight// keyboard closeif (onKeyBoardStatusChangeListener != null) {onKeyBoardStatusChangeListener.OnKeyBoardClose(blankHeight);}}}blankHeight = newBlankheight;}};public void setOnKeyBoardStatusChangeListener(OnKeyBoardStatusChangeListener onKeyBoardStatusChangeListener) {this.onKeyBoardStatusChangeListener = onKeyBoardStatusChangeListener;}public interface OnKeyBoardStatusChangeListener {void OnKeyBoardPop(int keyBoardheight);void OnKeyBoardClose(int oldKeyBoardheight);}}
具体的实现案例
xml布局文件
<RelativeLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="fill_parent"android:background="@drawable/login_map"android:focusable="false"android:orientation="vertical"><LinearLayoutandroid:id="@+id/layout_content"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="@dimen/padding_0"android:layout_marginTop="@dimen/padding_30"android:layout_weight="1"android:focusable="false"><ImageViewandroid:layout_width="match_parent"android:layout_height="match_parent"android:layout_margin="@dimen/padding_50"android:focusable="false"android:src="@drawable/login_welcome" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="@dimen/padding_0"android:layout_weight="2"android:focusable="false"android:gravity="center"android:orientation="vertical"><EditTextandroid:id="@+id/et_login_input"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_margin="@dimen/padding_20"android:background="@drawable/dialog_box"android:hint="@string/login_input"android:paddingBottom="@dimen/padding_15"android:paddingLeft="@dimen/padding_20"android:paddingTop="@dimen/padding_15"android:singleLine="true"android:textColor="@color/bg_white"android:textColorHint="@color/bg_white" /><TextViewandroid:id="@+id/tv_login"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_margin="@dimen/padding_20"android:background="@drawable/login_button"android:focusable="false"android:gravity="center"android:padding="@dimen/padding_15"android:text="@string/login_text"android:textColor="@color/bg_white"android:textSize="@dimen/padding_20" /></LinearLayout><TextViewandroid:id="@+id/layout_bottom"android:layout_width="match_parent"android:layout_height="10dp"android:layout_alignParentBottom="true"android:text="" /></LinearLayout></RelativeLayout>
效果图
主要功能的代码(我这里是在fragment里面写的查找id省略)
//关键的代码@Nullable@Overridepublic View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {View view = inflater.inflate(R.layout.fragment_login, container, false);initView(view);boardHelper = new KeyBoardHelper(getActivity());boardHelper.onCreate();boardHelper.setOnKeyBoardStatusChangeListener(onKeyBoardStatusChangeListener);layoutBottom.post(new Runnable() {@Overridepublic void run() {bottomHeight = layoutBottom.getHeight();}});return view;}private KeyBoardHelper.OnKeyBoardStatusChangeListener onKeyBoardStatusChangeListener = new KeyBoardHelper.OnKeyBoardStatusChangeListener() {@Overridepublic void OnKeyBoardPop(int keyBoardheight) {final int height = keyBoardheight;if (bottomHeight > height) {layoutBottom.setVisibility(View.GONE);} else {int offset = bottomHeight - height;final ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) layoutContent.getLayoutParams();lp.topMargin = offset;layoutContent.setLayoutParams(lp);}}@Overridepublic void OnKeyBoardClose(int oldKeyBoardheight) {if (View.VISIBLE != layoutBottom.getVisibility()) {layoutBottom.setVisibility(View.VISIBLE);}final ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) layoutContent.getLayoutParams();if (lp.topMargin != 0) {lp.topMargin = 0;layoutContent.setLayoutParams(lp);}}};
