IT资讯 -----------制作选择项

选择相应的博客后便进入了博客的主页

以下是选择项的源码：

这是其中的一个，因为每一个都有不相同的地方，所以代码都不一样，不过代码都是类似的。

该App已经上传到百度应用市场：http://shouji.baidu.com/soft/item?docid=8928185&from=as&f=search_app_it%E8%B5%84%E8%AE%AF%40list_1_image%402%40header_all_input

有兴趣的可以下载看看。接下来我会公布源代码，不过该App并没有使用代码混淆，所以可以通过反编译清楚的看到源码。

private TextView home_text;
private TextView essence_text;
private TextView pick_text;
private TextView news_text;
private ImageView mTabLine;
private Context context;
private int mCurrentPageIndex;
Activity activity;
private int mScreen;
private ViewPager mViewPage;
private View.OnClickListener onClickListener;

public BlogHouseActivity(Context context, Activity activity){
    this.context=context;
    this.activity=activity;
}

public void setViewPage(ViewPager mViewPage){
    this.mViewPage=mViewPage;
}

public void setOnClickListener(View.OnClickListener onClickListener){
    this.onClickListener=onClickListener;
}

public void blogClick(View v){

    int position=v.getId();
    LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) mTabLine.getLayoutParams();
    switch (position){
        case R.id.home:
            resetTextView();
            mViewPage.setCurrentItem(0);
            lp.leftMargin = (int) (0* mScreen);
            home_text.setTextColor(Color.parseColor("#008000"));
            mTabLine.setLayoutParams(lp);
            break;
        case R.id.essence:
            resetTextView();
            mViewPage.setCurrentItem(1);
            essence_text.setTextColor(Color.parseColor("#008000"));
            lp.leftMargin = (int) (1* mScreen);
            mTabLine.setLayoutParams(lp);
            break;
        case R.id.pick:
            resetTextView();
            mViewPage.setCurrentItem(2);
            pick_text.setTextColor(Color.parseColor("#008000"));
            lp.leftMargin = (int) (2* mScreen);
            mTabLine.setLayoutParams(lp);
            break;
        case R.id.news:
            resetTextView();
            mViewPage.setCurrentItem(3);
            news_text.setTextColor(Color.parseColor("#008000"));
            lp.leftMargin = (int) (3* mScreen);
            mTabLine.setLayoutParams(lp);
            break;
    }
}

public void initViewPage(){

    resetTextView();
    home_text.setTextColor(Color.parseColor("#008000"));
    mViewPage.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            LinearLayout.LayoutParams lp=(LinearLayout.LayoutParams)mTabLine.getLayoutParams();
            if (mCurrentPageIndex == 0 && position == 0) {    // 0-->1
                lp.leftMargin = (int) (positionOffset * mScreen + mCurrentPageIndex * mScreen);
            } else if (mCurrentPageIndex == 1 && position == 0) {   //1--->0
                lp.leftMargin = (int) (mCurrentPageIndex * mScreen + (positionOffset - 1) * mScreen);
            } else if (mCurrentPageIndex == 1 && position == 1) {    //1--->2
                lp.leftMargin = (int) (positionOffset * mScreen + mCurrentPageIndex * mScreen);
            } else if (mCurrentPageIndex == 2 && position == 1) {
                lp.leftMargin = (int) (mCurrentPageIndex * mScreen + (positionOffset - 1) * mScreen);
            } else if (mCurrentPageIndex == 2 && position == 2) {    //2->3
                lp.leftMargin = (int) (positionOffset * mScreen + mCurrentPageIndex * mScreen);
            }
            else if (mCurrentPageIndex == 3 && position == 2) {
                lp.leftMargin = (int) (mCurrentPageIndex * mScreen + (positionOffset - 1) * mScreen);
            }
            mTabLine.setLayoutParams(lp);
        }

        @Override
        public void onPageSelected(int position) {
            resetTextView();
            switch (position){
                case 0:
                    home_text.setTextColor(Color.parseColor("#008000"));
                    break;
                case 1:
                    essence_text.setTextColor(Color.parseColor("#008000"));
                    break;
                case 2:
                    pick_text.setTextColor(Color.parseColor("#008000"));
                    break;
                case 3:
                    news_text.setTextColor(Color.parseColor("#008000"));
                    break;
            }
            mCurrentPageIndex = position;
        }

        @Override
        public void onPageScrollStateChanged(int state) {

        }
    });
}

public void initTabLine(){
    mTabLine=(ImageView)activity.findViewById(R.id.id_iv_tabline);
    home_text=(TextView)activity.findViewById(R.id.home);
    essence_text=(TextView)activity.findViewById(R.id.essence);
    pick_text=(TextView)activity.findViewById(R.id.pick);
    news_text=(TextView)activity.findViewById(R.id.news);
    WindowManager manager=(WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
    DisplayMetrics metrics=new DisplayMetrics();
    manager.getDefaultDisplay().getMetrics(metrics);
    mScreen=metrics.widthPixels/4;
    LinearLayout.LayoutParams lp=(LinearLayout.LayoutParams)mTabLine.getLayoutParams();
    lp.weight=mScreen;
    mTabLine.setLayoutParams(lp);
}

public void textListener(){
    home_text.setOnClickListener(onClickListener);
    essence_text.setOnClickListener(onClickListener);
    pick_text.setOnClickListener(onClickListener);
    news_text.setOnClickListener(onClickListener);
}

protected void resetTextView() {
    home_text.setTextColor(Color.BLACK);
    essence_text.setTextColor(Color.BLACK);
    pick_text.setTextColor(Color.BLACK);
    news_text.setTextColor(Color.BLACK);
}