com.flan.stock.view.NewsTabView.java Source code

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Here is the source code for com.flan.stock.view.NewsTabView.java

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/*
 *    Flan.Zeng 2011-2016   http://git.oschina.net/signup?inviter=flan
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.flan.stock.view;

import com.flan.stock.R;

import android.content.Context;
import android.content.res.TypedArray;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;

/**
 * ?viewpager Tab
 * @author flan
 * @date   2015116
 */
public class NewsTabView extends RelativeLayout implements OnClickListener {

    //private Context context;
    private ViewPager viewPager;
    private ImageView img_cursor;
    private TextView tv_tag1, tv_tag2, tv_tag3, tv_tag4, tv_tag5;

    private int currentTab = 0;

    private int imgWidth;

    public NewsTabView(Context context) {
        super(context, null);
    }

    public NewsTabView(Context context, AttributeSet attrs) {
        super(context, attrs);

        //this.context = context;

        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.animationTabWidget);
        currentTab = typedArray.getInt(R.styleable.animationTabWidget_current_index, 0);
        typedArray.recycle();

        inflate(context, R.layout.layout_news_tabview, this);

        img_cursor = (ImageView) this.findViewById(R.id.tag_img_cursor);

        tv_tag1 = (TextView) this.findViewById(R.id.tv_tag1);
        tv_tag2 = (TextView) this.findViewById(R.id.tv_tag2);
        tv_tag3 = (TextView) this.findViewById(R.id.tv_tag3);
        tv_tag4 = (TextView) this.findViewById(R.id.tv_tag4);
        tv_tag5 = (TextView) this.findViewById(R.id.tv_tag5);

        tv_tag1.setOnClickListener(this);
        tv_tag2.setOnClickListener(this);
        tv_tag3.setOnClickListener(this);
        tv_tag4.setOnClickListener(this);
        tv_tag5.setOnClickListener(this);

        initDefaultIndex();
    }

    /**
     * ?  ?
     */
    private void initDefaultIndex() {

        //?? 
        DisplayMetrics dm = new DisplayMetrics();
        dm = getResources().getDisplayMetrics();
        int screenW = dm.widthPixels;
        imgWidth = screenW / 5;

        LayoutParams para = (LayoutParams) img_cursor.getLayoutParams();
        para.width = imgWidth;
        img_cursor.setLayoutParams(para);

        setCurrentTab(currentTab);
    }

    @Override
    public void onClick(View v) {

        switch (v.getId()) {
        case R.id.tv_tag1:
            currentTab = 0;
            break;
        case R.id.tv_tag2:
            currentTab = 1;
            break;
        case R.id.tv_tag3:
            currentTab = 2;
            break;
        case R.id.tv_tag4:
            currentTab = 3;
            break;
        case R.id.tv_tag5:
            currentTab = 4;
            break;

        }

        if (viewPager != null) {
            viewPager.setCurrentItem(currentTab);
        }

        setCurrentTab(currentTab);
    }

    public void setViewPager(ViewPager viewPager) {
        this.viewPager = viewPager;
    }

    /**
     * ? ?
     * @param position
     */
    public void setCurrentTab(int position) {

        tv_tag1.setTextSize(14);
        tv_tag2.setTextSize(14);
        tv_tag3.setTextSize(14);
        tv_tag4.setTextSize(14);
        tv_tag5.setTextSize(14);

        switch (position) {
        case 0:
            tv_tag1.setTextSize(16);
            break;
        case 1:
            tv_tag2.setTextSize(16);
            break;
        case 2:
            tv_tag3.setTextSize(16);
            break;
        case 3:
            tv_tag4.setTextSize(16);
            break;
        case 4:
            tv_tag5.setTextSize(16);
            break;
        }

        Animation animation = null;
        animation = new TranslateAnimation(imgWidth * currentTab, imgWidth * position, 0, 0);
        animation.setFillAfter(true);//True:???
        animation.setDuration(300); //?
        img_cursor.startAnimation(animation);

        currentTab = position;

    }

}