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Tab 滑动标签,综合ViewPager+Fragment+自定义Tab+ActionBar内容
1、效果图
第二个菜单TAB1,TAB2,TAB3是参照网上的例子,第一个菜单是在它的基础之上改变而来。
2、菜单
这里的菜单是通过两种方式来实现,一种是通过布局文件,一种是通过自定义组件LinearLayout。自定义只需要传入菜单的名字即可,切换时需要监听事件。下面是一个viewpager+fragment实现,在滑动时改变tab的选中项。
自定义tab底部线是采用TranslateAnimation动画来实现滚动,布局文件采用viewpager的方法onPageScrolled和onPageScrollStateChanged来实现。
2.1 自定义LinearLayout
<span style="font-size:14px;">package com.example.actionbar; import java.util.List; import android.annotation.SuppressLint; import android.content.Context; import android.graphics.Color; import android.util.AttributeSet; import android.util.DisplayMetrics; import android.view.Gravity; import android.view.View; import android.view.animation.AccelerateInterpolator; import android.view.animation.Animation; import android.view.animation.Animation.AnimationListener; import android.view.animation.TranslateAnimation; import android.widget.LinearLayout; import android.widget.TextView; public class TabView extends LinearLayout { private int screenWidth; private String[] tabNames; private int fontSize; private TextView[] mTextViews; private int lineHight; private View sliderLine; private int tabWidth; private int selectedPage; public TabView(Context context) { super(context); init(context); } public TabView(Context context, String[] tabNames, DisplayMetrics displayMetrics, int fontSize) { super(context); this.tabNames = tabNames; screenWidth = displayMetrics.widthPixels; this.fontSize = fontSize; init(context); } public TabView(Context context, List<String> names, DisplayMetrics displayMetrics, int fontSize) { super(context); if (names != null) { tabNames = new String[names.size()]; for (int i = 0; i < tabNames.length; i++) { this.tabNames[i] = names.get(i); } } screenWidth = displayMetrics.widthPixels; this.fontSize = fontSize; init(context); } public TabView(Context context, AttributeSet attrs) { super(context, attrs); init(context); } @SuppressLint("NewApi") public TabView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(context); } private void init(Context context) { if (tabNames==null || tabNames.length == 0) { return; } lineHight = (int) getResources().getDimension(R.dimen.cursor_height); tabWidth = screenWidth / tabNames.length; mTextViews = new TextView[tabNames.length]; setOrientation(LinearLayout.VERTICAL); LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams( new LayoutParams(screenWidth / tabNames.length, LayoutParams.MATCH_PARENT)); LinearLayout linearLayout = new LinearLayout(context); int height = (int) getResources().getDimension(R.dimen.tab_height); linearLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,height)); linearLayout.setOrientation(LinearLayout.HORIZONTAL); for (int i = 0; i < tabNames.length; i++) { TextView textView = new TextView(context); textView.setText(tabNames[i] + ""); textView.setLayoutParams(layoutParams); textView.setTextSize(fontSize); textView.setTextColor(Color.BLACK); textView.setGravity(Gravity.CENTER); mTextViews[i] = textView; final int pos = i; textView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(selectedPage!=pos){ isHidden(pos); } if (tabViewListener != null) { tabViewListener.currentPos(pos); } } }); linearLayout.addView(textView); } addView(linearLayout); if (tabNames.length>1) { LinearLayout.LayoutParams lineLayoutParams = new LinearLayout.LayoutParams(tabWidth, lineHight); TextView textView = new TextView(context); textView.setBackgroundColor(Color.parseColor("#FA8653")); textView.setLayoutParams(lineLayoutParams); sliderLine=textView; addView(textView); } isHidden(0); } private TabViewListener tabViewListener; public void setTabViewListener(TabViewListener linListener) { this.tabViewListener = linListener; } public TabViewListener getTabViewListener(){ return tabViewListener; } public interface TabViewListener { public void currentPos(int pos); } /* * 切换字体颜色 */ public void isHidden(int pos) { if (pos >= 0 || pos < tabNames.length) { tabScroll(pos); mTextViews[selectedPage].setTextColor(Color.BLACK); mTextViews[pos].setTextColor(Color.parseColor("#FA8653")); selectedPage=pos; } } /* * 滚动动画 */ private void tabScroll(int index){ if (selectedPage==index) { return; } sliderLine.setTranslationX(0); TranslateAnimation animation = new TranslateAnimation(selectedPage * tabWidth, index * tabWidth, 0, 0); animation.setInterpolator(new AccelerateInterpolator()); animation.setDuration(100); animation.setFillEnabled(true); animation.setFillAfter(true); sliderLine.startAnimation(animation); animation.setAnimationListener(new AnimationListener() { @Override public void onAnimationStart(Animation animation) { } @Override public void onAnimationRepeat(Animation animation) { } @Override public void onAnimationEnd(Animation animation) { sliderLine.clearAnimation(); sliderLine.setTranslationX(selectedPage * tabWidth); } }); } } </span>
2.2 使用布局文件
<span style="font-size:14px;">package com.example.actionbar; import java.util.ArrayList; import android.app.Activity; import android.content.Context; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.util.AttributeSet; import android.util.DisplayMetrics; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.view.animation.AccelerateInterpolator; import android.view.animation.Animation; import android.view.animation.Animation.AnimationListener; import android.view.animation.TranslateAnimation; import android.widget.LinearLayout; import android.widget.TextView; public class TabFragmentIndicator extends LinearLayout implements ViewPager.OnPageChangeListener, OnClickListener { OnTabClickListener onTabClickListener; Context mContext; ViewPager mViewPager; View container; private View slider; private int tabNum; private int selectedPage = 0; private int preSelectedPage = 0; private int scrollState; private final int SCROLL_STATE_PRESS = 1; private final int SCROLL_STATE_UP = 2; private float unitWidth; private float currentPositionPix; private boolean isClick = false; SectionsPagerAdapter mSectionsPagerAdapter; private ArrayList<Class<?>> fragmentList = new ArrayList<Class<?>>(); public TabFragmentIndicator(Context context, AttributeSet attrs) { super(context, attrs); mContext = context; } public void setViewPager(ViewPager viewPager) { viewPager.setOffscreenPageLimit(3); mViewPager = viewPager; mViewPager.setOnPageChangeListener(this); mSectionsPagerAdapter = new SectionsPagerAdapter( ((FragmentActivity) mContext).getSupportFragmentManager()); mViewPager.setAdapter(mSectionsPagerAdapter); } /** * 添加fragment * * @param index * @param claz */ public void addFragment(int index, Class<?> claz) { fragmentList.add(index, claz); if (mSectionsPagerAdapter != null) mSectionsPagerAdapter.notifyDataSetChanged(); } /** * 设置Tab布局 * * @param layoutId */ public void setTabContainerView(int layoutId) { container = LayoutInflater.from(mContext).inflate(layoutId, null); this.addView(container, 0); int height = (int) getResources().getDimension(R.dimen.tab_height); ViewGroup.LayoutParams params = container.getLayoutParams(); params.height = height; container.setLayoutParams(params); if (container instanceof ViewGroup) { tabNum = ((ViewGroup) container).getChildCount(); for (int i = 0; i < tabNum; i++) { ((ViewGroup) container).getChildAt(i).setTag(i); ((ViewGroup) container).getChildAt(i).setOnClickListener(this); } } } /** * 设置下划线 * * @param layoutId */ public void setTabSliderView(int layoutId) { slider = LayoutInflater.from(mContext).inflate(layoutId, null); this.addView(slider, 1); setCursorWidth(); } public View getIndicatorView() { return container; } public class SectionsPagerAdapter extends FragmentPagerAdapter { public SectionsPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int index) { return Fragment.instantiate(mContext, fragmentList.get(index) .getName(), null); } @Override public int getCount() { return fragmentList.size(); } } @Override public void onPageSelected(int position) { ((TextView) ((ViewGroup) container).getChildAt(selectedPage)) .setTextColor(this.getResources().getColor( android.R.color.black)); ((TextView) ((ViewGroup) container).getChildAt(position)) .setTextColor(this.getResources().getColor(R.color.orange)); selectedPage = position; } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { //不是点击tab选项 if (!isClick && positionOffsetPixels != 0) { if (scrollState == SCROLL_STATE_PRESS) {// 手指按下的状态 if (selectedPage == position) {// 表示往左拉,相应的tab往右走 slider.setTranslationX(currentPositionPix + positionOffsetPixels / tabNum); } else {// 表示往右拉 slider.setTranslationX(currentPositionPix - (unitWidth - positionOffsetPixels / tabNum)); } } else if (scrollState == SCROLL_STATE_UP) {// 手指抬起的状态 System.out.println("preSelectedPage---" + preSelectedPage +" position---" + position+" offset "+positionOffsetPixels); if (preSelectedPage == position) {// 往左拉 slider.setTranslationX(currentPositionPix + positionOffsetPixels / tabNum); } else {// 表示往右拉 slider.setTranslationX(currentPositionPix - (unitWidth - positionOffsetPixels / tabNum)); } } } } // 其中state这个参数有三种状态(0,1,2)。state // ==1的时辰默示正在滑动,state==2的时辰默示滑动完毕了,state==0的时辰默示什么都没做。 @Override public void onPageScrollStateChanged(int state) { System.out.println("onPageScrollStateChanged------state" + state); if (!isClick) { currentPositionPix = selectedPage * unitWidth; scrollState = state; preSelectedPage = selectedPage; } } /** * * 点击tab页时移动下划线 */ @Override public void onClick(View v) { final int index = (Integer) v.getTag(); onTabClickListener.onTabClick(v); if (selectedPage == index) { return; } isClick = true; slider.setTranslationX(0); TranslateAnimation animation = new TranslateAnimation(selectedPage * unitWidth, index * unitWidth, 0, 0); animation.setInterpolator(new AccelerateInterpolator()); animation.setDuration(100); animation.setFillEnabled(true); animation.setFillAfter(true); slider.startAnimation(animation); animation.setAnimationListener(new AnimationListener() { @Override public void onAnimationStart(Animation animation) { mViewPager.setCurrentItem(index, true); } @Override public void onAnimationRepeat(Animation animation) { } @Override public void onAnimationEnd(Animation animation) { slider.clearAnimation(); slider.setTranslationX(selectedPage * unitWidth); isClick = false; } }); } /** 设置cursor的宽度,并获取移动的单位长度float **/ private void setCursorWidth() { int cursorWidth = getWindowWidth() / tabNum; unitWidth = (float) getWindowWidth() / tabNum; int cursorHeight = (int) getResources().getDimension( R.dimen.cursor_height); ViewGroup.LayoutParams params = slider.getLayoutParams(); params.height = cursorHeight; params.width = cursorWidth; slider.setLayoutParams(params); } /** 获取屏幕宽度 **/ private int getWindowWidth() { DisplayMetrics dm = new DisplayMetrics(); ((Activity) mContext).getWindowManager().getDefaultDisplay() .getMetrics(dm); return dm.widthPixels; } public void setOnTabClickListener(OnTabClickListener onTabClickListener) { this.onTabClickListener = onTabClickListener; } public interface OnTabClickListener { public void onTabClick(View v); } } </span>
<span style="font-size:14px;"><?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal" > <TextView android:id="@+id/tab1_text" android:layout_width="0dp" android:layout_weight="1.0" android:gravity="center" android:layout_height="@dimen/tab_height" android:textColor="@color/orange" style="@style/Style.ActionBarTabTextStyle" android:text="tab1" /> <TextView android:id="@+id/tab2_text" android:layout_width="0dp" android:layout_height="@dimen/tab_height" android:layout_weight="1.0" android:gravity="center" style="@style/Style.ActionBarTabTextStyle" android:text="tab2" /> <TextView android:id="@+id/tab3_text" android:layout_width="0dp" android:layout_height="@dimen/tab_height" android:layout_weight="1.0" android:gravity="center" style="@style/Style.ActionBarTabTextStyle" android:text="tab3" /> </LinearLayout></span>
3、测试调用
<span style="font-family: 'Comic Sans MS';"><span style="font-size:14px;">public class HomeActivity extends FragmentActivity implements OnTabClickListener, OnCategorySelectedListener { private ViewPager mViewPager; private TabFragmentIndicator tabFragmentIndicator; private View categoryTab; private CategoryWindow categoryWindow; private SettingMenuWindow menuWindow; private LinearLayout ll_tab; private TabView tabView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_home); menuWindow = new SettingMenuWindow(this); mViewPager = (ViewPager) findViewById(R.id.viewPager); ll_tab = (LinearLayout) findViewById(R.id.ll_tab); tabFragmentIndicator = (TabFragmentIndicator) findViewById(R.id.tabFragmentIndicator); tabFragmentIndicator.addFragment(0, CountingFragment.class); tabFragmentIndicator.addFragment(1, CountingFragment.class); tabFragmentIndicator.addFragment(2, CountingFragment.class); tabFragmentIndicator .setTabContainerView(R.layout.layout_home_tabindicator); tabFragmentIndicator.setTabSliderView(R.layout.layout_home_tab_slider); tabFragmentIndicator.setOnTabClickListener(this); tabFragmentIndicator.setViewPager(mViewPager); categoryWindow = new CategoryWindow(this, this); DisplayMetrics dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); tabView = new TabView(this, new String[] { "菜单", "发现", "设置" }, dm, 20); ll_tab.addView(tabView); tabView.setTabViewListener(new TabViewListener() { @Override public void currentPos(int pos) { tabView.isHidden(pos); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_more: menuWindow.showAsDropDown(findViewById(R.id.anchorView), 1800, -25); break; } return super.onOptionsItemSelected(item); } @Override public void onTabClick(View v) { int pos = (Integer) v.getTag(); if (pos == 0) { categoryWindow.showAsDropDown(tabFragmentIndicator, -20, 0); } tabView.getTabViewListener().currentPos(pos); } @Override public void onCategorySelected(String name, String id) { ((TextView) categoryTab).setText(name); categoryWindow.dismiss(); } }</span></span>
源码下载
Tab 滑动标签,综合ViewPager+Fragment+自定义Tab+ActionBar内容
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