Android(安卓)TabHost 选项卡 滑动activity进行切换选项卡
16lz
2021-01-24
1、布局界面：
2、tab选项卡布局
<?xml version="1.0" encoding="utf-8"?> public class TestActivity extends TabActivity {protected TabHost tabHost;private static final String TAB_PAGE1="page1";private static final String TAB_PAGE2="page2";private static final String TAB_PAGE3="page3";private static final String TAB_PAGE4="page4";private int tab_last_position;//通过TabWidget可以获取选项卡的布局private TabWidget mTabWidget; private static final int SWIPE_MIN_DISTANCE = 120;private static final int SWIPE_MAX_OFF_PATH = 250;private static final int SWIPE_THRESHOLD_VELOCITY = 200;private GestureDetector gestureDetector;View.OnTouchListener gestureListener; private static int maxTabIndex = 3; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.apply_main); tabHost = getTabHost(); TabSpec tabSpec = tabHost.newTabSpec(TAB_PAGE1); tabSpec.setIndicator(createTabView("音乐")); Intent intent = new Intent(this, GovernmentActivity.class); tabSpec.setContent(intent); tabHost.addTab(tabSpec); tabSpec = tabHost.newTabSpec(TAB_PAGE2); intent = new Intent(this, ClassifyActivity.class); tabSpec.setContent(intent); tabSpec.setIndicator(createTabView("电影")); tabHost.addTab(tabSpec); tabSpec = tabHost.newTabSpec(TAB_PAGE3); tabSpec.setIndicator(createTabView("电视剧")); intent = new Intent(this, PaihangActivity.class); tabSpec.setContent(intent); tabHost.addTab(tabSpec); // tabSpec = tabHost.newTabSpec(TAB_PAGE4); tabSpec.setIndicator(createTabView("书籍")); intent = new Intent(this, FirstTestActivity.class); tabSpec.setContent(intent); tabHost.addTab(tabSpec); //默认使其选中 tabHost.setCurrentTab(0); tab_last_position=0; View view = tabHost.getCurrentTabView();ImageView imageView = (ImageView) view.findViewById(R.id.tab_line);TextView mTextView = (TextView) view.findViewById(R.id.tab_name);imageView.setVisibility(View.VISIBLE);mTextView.setTextColor(Color.GREEN);mTabWidget = tabHost.getTabWidget(); tabHost.setOnTabChangedListener(new OnTabChangeListener() {@Overridepublic void onTabChanged(String tabId) {ImageView imageView = null;Logger.getLogger().i("------>" + tab_last_position);//获取到视图，可以对其进行样式的改变View lastView = mTabWidget.getChildAt(tab_last_position);imageView = (ImageView) lastView.findViewById(R.id.tab_line);TextView mTextView = (TextView) lastView.findViewById(R.id.tab_name);if (imageView!=null) {imageView.setVisibility(View.GONE);mTextView.setTextColor(getResources().getColor(R.color.white));}View view = tabHost.getCurrentTabView();imageView = (ImageView) view.findViewById(R.id.tab_line);mTextView = (TextView) view.findViewById(R.id.tab_name);imageView.setVisibility(View.VISIBLE);mTextView.setTextColor(Color.GREEN);mTabWidget = tabHost.getTabWidget();tab_last_position = tabHost.getCurrentTab(); }}); //滑动事件 gestureDetector = new GestureDetector(new TabGestureDetector()); // gestureListener = new View.OnTouchListener() { // public boolean onTouch(View v, MotionEvent event) { // if (gestureDetector.onTouchEvent(event)) { // return true; // } // return false; // } // }; } // 创建tab标签 protected View createTabView(String name) { View tabView = getLayoutInflater().inflate(R.layout.tab_background, null); TextView textView = (TextView) tabView.findViewById(R.id.tab_name);// 找到textview控件 textView.setText(name); return tabView; } // 左右滑动刚好页面也有滑动效果 private class TabGestureDetector extends SimpleOnGestureListener { @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { try { if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH) return false; // right to left swipe int currentView = tabHost.getCurrentTab(); if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { Log.i("test", "right" +currentView); if (currentView SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { Log.i("test", "left" +currentView); if (currentView > 0) { currentView--; tabHost.setCurrentTab(currentView); } } } catch (Exception e) { e.printStackTrace(); } return false; } } @Override public boolean dispatchTouchEvent(MotionEvent event) { if (gestureDetector.onTouchEvent(event)) { Log.i("test", "---------------dispatch ... "); event.setAction(MotionEvent.ACTION_CANCEL); } return super.dispatchTouchEvent(event); } } 更多相关文章
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