Android自定义选项卡切换效果

本文实例为大家分享了Android自定义选项卡切换效果的具体代码，供大家参考，具体内容如下

1、布局

<?xml version='1.0' encoding='utf-8'?><LinearLayout xmlns:android='http://schemas.android.com/apk/res/android' xmlns:app='http://schemas.android.com/apk/res-auto' xmlns:tools='http://schemas.android.com/tools' android:layout_width='232dp' android:layout_height='32dp' android:background='@drawable/leave_back_tab_bg_selector' android:orientation='horizontal'> <TextViewandroid: android:layout_width='match_parent'android:layout_height='match_parent'android:background='@drawable/leave_back_button_bg_selector'android:gravity='center'android:layout_weight='1'android:textColor='@color/white'android:textSize='14sp'android:clickable='true'android:focusable='true'android:focusableInTouchMode='true'android:text='@string/leave_crews_num'/> <TextViewandroid: android:layout_width='match_parent'android:layout_height='match_parent'android:background='@drawable/leave_back_button_bg_selector'android:gravity='center'android:layout_weight='1'android:textColor='@color/white'android:textSize='14sp'android:clickable='true'android:focusable='true'android:focusableInTouchMode='true'android:text='@string/back_crews_num'/></LinearLayout>

leave_back_button_bg_selector：

<?xml version='1.0' encoding='utf-8'?><selector xmlns:android='http://schemas.android.com/apk/res/android'> <item><shape android:shape='rectangle'> <stroke android: android:color='#328BDD' /> <corners android:radius='3dp' /> <solid android:color='@color/transparent' /></shape> </item></selector>

leave_back_button_bg_selector

<?xml version='1.0' encoding='utf-8'?><selector xmlns:android='http://schemas.android.com/apk/res/android'> <item android:state_focused='true'><shape android:shape='rectangle'> <stroke android: android:color='#328BDD' /> <corners android:radius='3dp' /> <solid android:color='#328BDD' /></shape> </item> <item><shape android:shape='rectangle'> <stroke android: android:color='@color/transparent' /> <corners android:radius='3dp' /> <solid android:color='@color/transparent' /></shape> </item></selector>

2、控件封装

import android.content.Context;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.widget.LinearLayout;import android.widget.TextView;import butterknife.BindView;import butterknife.ButterKnife;import butterknife.OnFocusChange;public class LeaveBackTitleTabView extends LinearLayout { public final static int INDEX_LEAVE = 1; public final static int INDEX_BACK = 2; @BindView(R.id.tvBackNum) TextView tvBackNum; @BindView(R.id.tvLeaveNum) TextView tvLeaveNum; private Context mContext; private ITabChangeListener tabChangeListener; public void setTabChangeListener(ITabChangeListener tabChangeListener) {this.tabChangeListener = tabChangeListener; } public LeaveBackTitleTabView(Context context) {super(context);mContext = context; } public LeaveBackTitleTabView(Context context, AttributeSet attrs) {super(context, attrs);mContext = context;View view = (View) LayoutInflater.from(context).inflate(R.layout.view_leave_back_list_tab, this, true);ButterKnife.bind(view); } @OnFocusChange({R.id.tvLeaveNum,R.id.tvBackNum}) public void doFocusChanged(View view){switch(view.getId()){ case R.id.tvLeaveNum :if(tabChangeListener != null){ tabChangeListener.onTabChanged(INDEX_LEAVE);}break; case R.id.tvBackNum:if(tabChangeListener != null){ tabChangeListener.onTabChanged(INDEX_BACK);}break;} } public void setCrewsNum(int leaveNum,int backNum){tvLeaveNum.setText(String.format(getResources().getString(R.string.leave_crews_num), String.valueOf(leaveNum)));tvBackNum.setText(String.format(getResources().getString(R.string.back_crews_num), String.valueOf(backNum)));if(leaveNum > 0 && backNum > 0){ tvLeaveNum.requestFocus();}else if(leaveNum > 0 && backNum == 0){ tvLeaveNum.setClickable(true); tvLeaveNum.setFocusable(true); tvBackNum.setClickable(false); tvBackNum.setFocusable(false); tvLeaveNum.requestFocus();}else if(leaveNum == 0 && backNum > 0){ tvLeaveNum.setClickable(false); tvLeaveNum.setFocusable(false); tvBackNum.setClickable(true); tvBackNum.setFocusable(true); tvBackNum.requestFocus();}else{ tvLeaveNum.setClickable(false); tvLeaveNum.setFocusable(false); tvBackNum.setClickable(false); tvBackNum.setFocusable(false);} } /** * TAB切换时的listener */ public interface ITabChangeListener{public void onTabChanged(int index); }}

3、使用方法

<com.hisign.ship_terminal_hs518.view.LeaveBackTitleTabView android:layout_width='232dp' android:layout_height='32dp' android:layout_marginTop='10dp' android:visibility='gone' android:id='@+id/lttTitle'></com.hisign.ship_terminal_hs518.view.LeaveBackTitleTabView>

4、注册回调事件（一般在UI界面上进行注册）

/** * 离船和在船船员信息列表 */ private LeaveBackTitleTabView.ITabChangeListener iTabChangeListener = new LeaveBackTitleTabView.ITabChangeListener() {@Overridepublic void onTabChanged(int index) { switch (index) {case LeaveBackTitleTabView.INDEX_LEAVE: // 界面上点击了离船 ll_leave_crews.setVisibility(View.VISIBLE); ll_back_crews.setVisibility(View.GONE); break;case LeaveBackTitleTabView.INDEX_BACK: // 界面上点击了在船 ll_back_crews.setVisibility(View.VISIBLE); ll_leave_crews.setVisibility(View.GONE); break; }} };

5、注意事项：

（1）、控件需要能响应点击事件，同时切换到某一选项时，该选项卡需要显示选中的状态，所以在控件中需要指定：

android:clickable='true' android:focusable='true' android:focusableInTouchMode='true'

但是这样设置了之后，控件就在点击时就不能在点击的第一下响应onClick点击事件，我的做法是响应onFouceChange事件

（2）、为啥这样设置，在点击的第一下就不响应onClick了呢？源码中显示w 在 onTouchEvent() 中的 MotionEvent.ACTION_UP 中对focus做了处理， 如果View focusableInTouchMode 是true, 并且当前没有获得焦点, 那么会尝试获取焦点, 并且不会调用 performClick()。

public boolean onTouchEvent(MotionEvent event) { ... if (((viewFlags & CLICKABLE) == CLICKABLE || (viewFlags & LONG_CLICKABLE) == LONG_CLICKABLE) || (viewFlags & CONTEXT_CLICKABLE) == CONTEXT_CLICKABLE) { switch (action) { case MotionEvent.ACTION_UP: boolean prepressed = (mPrivateFlags & PFLAG_PREPRESSED) != 0; if ((mPrivateFlags & PFLAG_PRESSED) != 0 || prepressed) { boolean focusTaken = false; if (isFocusable() && isFocusableInTouchMode() && !isFocused()) { focusTaken = requestFocus(); } if (prepressed) { setPressed(true, x, y);} if (!mHasPerformedLongPress && !mIgnoreNextUpEvent) { removeLongPressCallback(); if (!focusTaken) { if (mPerformClick == null) { mPerformClick = new PerformClick(); } if (!post(mPerformClick)) { performClick(); } } } ...}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持好吧啦网。