Scrollable可拖动的TabActivity

看图：

/** */package com.ql.activity;import java.util.ArrayList;import java.util.List;import com.ql.view.RadioStateDrawable;import com.ql.view.TabBarButton;import android.app.ActivityGroup;import android.app.LocalActivityManager;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.os.Bundle;import android.view.Display;import android.view.Gravity;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.view.ViewGroup.LayoutParams;import android.widget.LinearLayout;import android.widget.RadioGroup;public class ScrollableTabActivity extends ActivityGroup  implements RadioGroup.OnCheckedChangeListener{private LocalActivityManager activityManager;public LinearLayout contentViewLayout;private LinearLayout.LayoutParams contentViewLayoutParams;//private HorizontalScrollView bottomBar;private RadioGroup.LayoutParams buttonLayoutParams;private RadioGroup bottomRadioGroup;//private Context context;publicList<Intent> intentList;private List<String> titleList;private List states;private SliderBarActivityDelegate delegate;private int defaultOffShade;private int defaultOnShade;private IntentFilter changeTabIntentFilter;private ChangeTabBroadcastReceiver changeTabBroadcastReceiver;public static String CURRENT_TAB_INDEX;public static String ACTION_CHANGE_TAB = ".changeTab";    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //context = this;                activityManager = getLocalActivityManager();                requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.customslidingtabhost);        //getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title);                contentViewLayout = (LinearLayout)findViewById(R.id.contentViewLayout);        //bottomBar = (HorizontalScrollView)findViewById(R.id.bottomBar);        bottomRadioGroup = (RadioGroup)findViewById(R.id.bottomMenu);        contentViewLayoutParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);                 defaultOffShade = RadioStateDrawable.SHADE_GRAY;        defaultOnShade = RadioStateDrawable.SHADE_YELLOW;                /*         *  alternative method to using XML for layout, not used         */        /*        if (inflateXMLForContentView())        {        contentViewLayoutParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);         }        else        {        RelativeLayout mainLayout = new RelativeLayout(this);            RelativeLayout.LayoutParams mainLayoutParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);            mainLayout.setLayoutParams(mainLayoutParams);            contentViewLayout = new LinearLayout(this);            contentViewLayout.setOrientation(LinearLayout.VERTICAL);            contentViewLayout.setBackgroundColor(Color.WHITE);            contentViewLayoutParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);            contentViewLayoutParams.bottomMargin = 55;            mainLayout.addView(contentViewLayout, contentViewLayoutParams);            bottomBar = new HorizontalScrollView(this);            //bottomBar.setHorizontalFadingEdgeEnabled(false);            RelativeLayout.LayoutParams bottomBarLayout = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, 55);            bottomBarLayout.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);            mainLayout.addView(bottomBar, bottomBarLayout);            bottomRadioGroup = new RadioGroup(this);            bottomRadioGroup.setOrientation(RadioGroup.HORIZONTAL);            LayoutParams bottomRadioGroupLayoutParam = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);            bottomRadioGroup.setLayoutParams(bottomRadioGroupLayoutParam);            bottomBar.addView(bottomRadioGroup);            if (bottomBar()!=-1) bottomBar.setBackgroundResource(bottomBar());            //bottomBar.setBackgroundResource(R.drawable.bottom_bar);            setContentView(mainLayout);        }*/                 bottomRadioGroup.setOnCheckedChangeListener(this);        intentList  = new ArrayList();        titleList= new ArrayList();        states = new ArrayList();                buttonLayoutParams = new RadioGroup.LayoutParams(320/5, 55);    }        public void onResume()    {    changeTabIntentFilter = new IntentFilter(ACTION_CHANGE_TAB);    changeTabBroadcastReceiver = new ChangeTabBroadcastReceiver();    registerReceiver(changeTabBroadcastReceiver, changeTabIntentFilter);    super.onResume();    }        public void onPause()    {    unregisterReceiver(changeTabBroadcastReceiver);    super.onPause();    }    public void commit()    {    bottomRadioGroup.removeAllViews();        int optimum_visible_items_in_portrait_mode = 5;//    try//    {//    WindowManager window = getWindowManager();//        Display display = window.getDefaultDisplay();//        int window_width = display.getWidth();//        //        optimum_visible_items_in_portrait_mode = (int) (window_width/64.0);//    }//    catch (Exception e)//    {//    optimum_visible_items_in_portrait_mode = 5;//    }//        int screen_width = getWindowManager().getDefaultDisplay().getWidth();    int width;    if (intentList.size()<=optimum_visible_items_in_portrait_mode)    {    width = screen_width/intentList.size();    }    else    {    width = screen_width/5;    }    RadioStateDrawable.width = width;RadioStateDrawable.screen_width = screen_width;//int height = ViewTools.px2dip(this, 50);int height = this.px2dip(this, 50);    RadioStateDrawable.height = height;buttonLayoutParams = new RadioGroup.LayoutParams(width, height);        for (int i=0; i<intentList.size(); i++)    {    TabBarButton tabButton = new TabBarButton(this);    int[] iconStates = (int[]) states.get(i);    if (iconStates.length==1) tabButton.setState( titleList.get(i).toString(),iconStates[0]);    else if (iconStates.length==2) tabButton.setState(titleList.get(i).toString(), iconStates[0], iconStates[1]);    else if (iconStates.length==3) tabButton.setState(titleList.get(i).toString(), iconStates[0], iconStates[1], iconStates[2]);        tabButton.setId(i);        tabButton.setGravity(Gravity.CENTER);        bottomRadioGroup.addView(tabButton, i, buttonLayoutParams);    }        setCurrentTab(0);    }        /**     * <b><i>protected void addTab(String title, int offIconStateId, int onIconStateId, Intent intent)</i></b> <p><p>     * Add a tab to the navigation bar by specifying the title, 1 image for button on-state, and 1 image for button off-state<p>     * @param titlea String that specifies that title of the tab button     * @param onIconStateIdid of the on-state image     * @param offIconStateIdid of the off-state image     * @param intentintent to start when button is tapped     */    protected void addTab(String title, int offIconStateId, int onIconStateId, Intent intent)    {    int[] iconStates = {onIconStateId, offIconStateId};    states.add(iconStates);    intentList.add(intent);    titleList.add(title);    //commit();    }        /**     * <b><i>protected void addTab(String title, int iconStateId, Intent intent)</i></b> <p><p>     * Add a tab to the navigation bar by specifying the title, and 1 image for the button. Default yellow/gray shade is used for button on/off state<p>     * @param titlea String that specifies that title of the tab button     * @param iconStateIdid of the image used for both on/off state     * @param intentintent to start when button is tapped     */    protected void addTab(String title, int iconStateId, Intent intent)    {    //int[] iconStates = {iconStateId};    int[] iconStates = {iconStateId, defaultOffShade, defaultOnShade};    states.add(iconStates);    intentList.add(intent);    titleList.add(title);    //commit();    }        /**     * <b><i>protected void addTab(String title, int iconStateId, int offShade, int onShade, Intent intent)</i></b> <p><p>     * Add a tab to the navigation bar by specifying the title, and 1 image for the button. Default yellow/gray shade is used for button on/off state<p>     * @param titlea String that specifies that title of the tab button     * @param iconStateIdid of the image used for both on/off state     * @param offShade  id for off-state color shades (e.g. RadioStateDrawable.SHADE_GRAY, RadioStateDrawable.SHADE_GREEN etc)     * @param onShadeid for on-state color shades (e.g. RadioStateDrawable.SHADE_GRAY, RadioStateDrawable.SHADE_GREEN etc)     * @param intentintent to start when button is tapped     */    protected void addTab(String title, int iconStateId, int offShade, int onShade, Intent intent)    {    int[] iconStates = {iconStateId, offShade, onShade};    states.add(iconStates);    intentList.add(intent);    titleList.add(title);    //commit();    }    /**     * <b><i>protected void setDefaultShde(int offShade, int onShade)</i></b><p><p>     * Sets the default on and off color shades of the bottom bar buttons<p>     * If not specified, the default off shade is gray, and the default on shade is yellow     * @param offShadeid for off-state color shades (e.g. RadioStateDrawable.SHADE_GRAY, RadioStateDrawable.SHADE_GREEN etc)     * @param onShadeid for on-state color shades (e.g. RadioStateDrawable.SHADE_GRAY, RadioStateDrawable.SHADE_GREEN etc)     */    protected void setDefaultShade(int offShade, int onShade)    {    defaultOffShade = offShade;    defaultOnShade = onShade;    }        public void onCheckedChanged(RadioGroup group, int checkedId) {    try    {    if (delegate!=null) delegate.onTabChanged(checkedId);    }    catch (Exception e){}        Intent intent = intentList.get(checkedId);    startGroupActivity( titleList.get(checkedId).toString(), intent );        onTabChanged(checkedId, intent);    }        //    public void onTabChanged(int checkedId, Intent intent) {        }        public void startGroupActivity(String id, Intent intent)    {    contentViewLayout.removeAllViews();        View view = activityManager.startActivity(id, intent).getDecorView();        contentViewLayout.addView(view, contentViewLayoutParams);    }        public void setCurrentTab(int index)    {    bottomRadioGroup.check(index);startGroupActivity(titleList.get(index).toString(), (Intent)intentList.get(index));    }        public int getCurrentTab()    {    return bottomRadioGroup.getCheckedRadioButtonId();    }        /*     * gets required R, not used     */    public boolean inflateXMLForContentView()    {    /*    setContentView(R.layout.customslidingtabhost);        contentViewLayout = (LinearLayout)findViewById(R.id.contentViewLayout);        bottomBar = (HorizontalScrollView)findViewById(R.id.bottomBar);        bottomRadioGroup = (RadioGroup)findViewById(R.id.bottomMenu);    */    return false;    }        public int bottomBar()    {    return -1;    }        /*     * delegates     */        public void setDelegate(SliderBarActivityDelegate delegate_)    {    delegate = delegate_;    }        public static abstract class SliderBarActivityDelegate {        /*         * Called when tab changed         */        protected void onTabChanged(int tabIndex) {}    }        /*     * Broadcast receiver to set current tab     */        public class ChangeTabBroadcastReceiver extends BroadcastReceiver    {    @Override    public void onReceive(Context context, Intent intent)    {    int index = intent.getExtras().getInt(CURRENT_TAB_INDEX);    setCurrentTab(index);    }    }  //dip/px像素单位转换public static int dip2px(Context context, float dipValue){           final float scale = context.getResources().getDisplayMetrics().density;           return (int)(dipValue / scale + 0.5f);       }   public static int px2dip(Context context, float pxValue){   final float scale = context.getResources().getDisplayMetrics().density;       return (int)(pxValue * scale + 0.5f);   }  }

package com.ql.view;import android.content.Context;import android.content.res.Resources;import android.graphics.drawable.Drawable;import android.graphics.drawable.StateListDrawable;import android.util.AttributeSet;import android.widget.RadioButton;public class TabBarButton extends RadioButton{Context context;public TabBarButton(Context context) {super(context);this.context = context;}public TabBarButton(Context context, AttributeSet attrs) {super(context, attrs);this.context = context;}public void setState(String label, int imageId){RadioStateDrawable offDrawable = new RadioStateDrawable(context, imageId, label, false, RadioStateDrawable.SHADE_GRAY);RadioStateDrawable onDrawable = new RadioStateDrawable(context, imageId, label, true, RadioStateDrawable.SHADE_YELLOW);setStateImageDrawables(onDrawable,offDrawable);}public void setState(String label, int imageId, int offState, int onState){RadioStateDrawable offDrawable = new RadioStateDrawable(context, imageId, label, false, offState);RadioStateDrawable onDrawable = new RadioStateDrawable(context, imageId, label, true, onState);setStateImageDrawables(onDrawable,offDrawable);}public void setState(String label, int onId, int offId){Resources resource = this.getResources();Drawable offDrawable = resource.getDrawable(offId);Drawable onDrawable = resource.getDrawable(onId);setStateImageDrawables(onDrawable,offDrawable);}private void setStateImageDrawables(Drawable onDrawable, Drawable offDrawable){StateListDrawable drawables = new StateListDrawable();int stateChecked = android.R.attr.state_checked;int stateFocused = android.R.attr.state_focused;int statePressed = android.R.attr.state_pressed;int stateWindowFocused = android.R.attr.state_window_focused;//Resources resource = this.getResources();//Drawable xDrawable = resource.getDrawable(R.drawable.bottom_bar_highlight);drawables.addState(new int[]{ stateChecked, -stateWindowFocused}, offDrawable);drawables.addState(new int[]{-stateChecked, -stateWindowFocused}, offDrawable);drawables.addState(new int[]{ stateChecked,  statePressed      }, onDrawable);drawables.addState(new int[]{-stateChecked,  statePressed      }, onDrawable);drawables.addState(new int[]{ stateChecked,  stateFocused      }, onDrawable);drawables.addState(new int[]{-stateChecked,  stateFocused      }, offDrawable);drawables.addState(new int[]{ stateChecked                     }, onDrawable);drawables.addState(new int[]{-stateChecked                     }, offDrawable);drawables.addState(new int[]{                     }, onDrawable);this.setButtonDrawable(drawables);}}

/**  *  */package com.ql.view;import java.io.InputStream;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.ColorFilter;import android.graphics.LinearGradient;import android.graphics.Paint;import android.graphics.Rect;import android.graphics.Shader;import android.graphics.Paint.Align;import android.graphics.Paint.FontMetrics;import android.graphics.drawable.Drawable;public class RadioStateDrawable extends Drawable{private inttextSize = 14;private Bitmap bitmap;//private Bitmap highlightBitmap;    private Shader shader;    private Shader textShader;Context context;public static int width;public static int height;public static int screen_width;private boolean highlight;private String label;public static final int SHADE_GRAY = 0;public static final int SHADE_BLUE = 1;public static final int SHADE_MAGENTA = 2;public static final int SHADE_YELLOW = 3;public static final int SHADE_WHITE = 4;public static final int SHADE_RED = 5;public static final int SHADE_ORANGE = 6;public RadioStateDrawable(Context context, int imageID, String label, boolean highlight, int shade){super();this.highlight = highlight;this.context = context;this.label = label;InputStream is = context.getResources().openRawResource(imageID);bitmap = BitmapFactory.decodeStream(is).extractAlpha();setShade(shade);//highlightBitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.bottom_bar_highlight);}public RadioStateDrawable(Context context, int imageID, String label, boolean highlight, int startGradientColor, int endGradientColor){super();this.highlight = highlight;this.context = context;this.label = label;InputStream is = context.getResources().openRawResource(imageID);bitmap = BitmapFactory.decodeStream(is).extractAlpha();int[] shades = new int[] { startGradientColor, endGradientColor};shader = new LinearGradient(0, 0, 0, bitmap.getHeight(), shades, null, Shader.TileMode.MIRROR);}public void setShade(int shade){int[] shades = new int[2];switch (shade){case SHADE_GRAY:{shades = new int[]{Color.LTGRAY, Color.DKGRAY };break;}case SHADE_BLUE:{shades = new int[]{Color.CYAN, Color.BLUE };break;}case SHADE_RED:{shades = new int[]{Color.MAGENTA, Color.RED };break;}case SHADE_MAGENTA:{shades = new int[]{ Color.MAGENTA, Color.rgb(292, 52, 100) };break;}case SHADE_YELLOW:{shades = new int[]{Color.YELLOW, Color.rgb(255, 126, 0) };break;}case SHADE_ORANGE:{shades = new int[]{Color.rgb(255, 126, 0), Color.rgb(255,90,0) };break;}case SHADE_WHITE:{shades = new int[]{Color.WHITE, Color.LTGRAY };break;}}shader = new LinearGradient(0, 0, 0, bitmap.getHeight(), shades, null, Shader.TileMode.MIRROR);if (highlight) textShader = new LinearGradient(0, 0, 0, 10, new int[]{Color.WHITE, Color.LTGRAY}, null, Shader.TileMode.MIRROR);else textShader = new LinearGradient(0, 0, 0, 10, new int[]{Color.LTGRAY, Color.DKGRAY}, null, Shader.TileMode.MIRROR);}@Overridepublic void draw(Canvas canvas) {int bwidth = bitmap.getWidth();int bheight = bitmap.getHeight();/*if (width==0){if (screen_width==0) screen_width = 320;width=screen_width/5;}*/int x = (width-bwidth)/2;int top = 2+(32-bheight)/2;//if (highlight)//canvas.drawColor(Color.LTGRAY);//elsecanvas.drawColor(Color.TRANSPARENT);Paint p = new Paint();//p.setColor(Color.RED);//      p.setStyle(Paint.Style.FILL);p.setTextSize(textSize);//p.setTypeface(Typeface.DEFAULT_BOLD);//p.setFakeBoldText(true);p.setTextAlign(Align.CENTER);p.setShader(textShader);p.setAntiAlias(true);FontMetrics fm = p.getFontMetrics();int y = top+bheight + (int)(height-top-bheight - fm.ascent)/2;canvas.drawText(label, width/2 ,y, p);p.setShader(shader);//Rect rect = new Rect();//rect.set(x, top, x+32, top+32);//Rect src = new Rect();//src.set(0, 0, bwidth, bheight);canvas.drawBitmap(bitmap, x, top, p);}@Overridepublic int getOpacity() {return 0;}@Overridepublic void setAlpha(int alpha) {}@Overridepublic void setColorFilter(ColorFilter cf) {}}

用法：

package com.ql.activity;import android.content.Intent;import android.os.Bundle;import android.util.Log;public class MainActivity extends ScrollableTabActivity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);//        setContentView(R.layout.main);                setDelegate(new SliderBarActivityDelegateImpl());        Intent intent = new Intent(this, Test_1_Activity.class);        this.addTab("首页", R.drawable.home, intent);        intent = new Intent(this, Test_2_Activity.class);        this.addTab("自选", R.drawable.mystock, intent);        intent = new Intent(this, Test_3_Activity.class);        this.addTab("排行", R.drawable.rank, intent);        intent = new Intent(this, Test_4_Activity.class);        this.addTab("主力", R.drawable.zhuli, intent);        intent = new Intent(this, Test_6_Activity.class);        this.addTab("Loading", R.drawable.zhuli, intent);                commit();//别忘了执行        setCurrentTab(0);    }        private class SliderBarActivityDelegateImpl extends SliderBarActivityDelegate    {    /*     * Optional callback method     * called when users tap on the tab bar button     */    protected void onTabChanged(int tabIndex)     {    Log.d("onTabChanged",""+tabIndex);    if(tabIndex == 1)    {    //title.setText("啊啊啊啊");    }    }    }}

妙用TabHost
http://www.cnblogs.com/over140/archive/2011/03/02/1968042.html

Android入门第十五篇之ActivityGroup + GridView 实现Tab分页标签
http://blog.csdn.net/hellogv/archive/2010/12/06/6057174.aspx

更多相关文章

随机推荐