package com.topnews;
import java.util.ArrayList;
import com.topnews.adapter.NewsFragmentPagerAdapter;
import com.topnews.bean.NewsClassify;
import com.topnews.fragment.NewsFragment;
import com.topnews.tool.BaseTools;
import com.topnews.tool.Constants;
import com.topnews.view.ColumnHorizontalScrollView;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
/**
* （android高仿系列）今日头条 --新闻阅读器 （一）
* author:RA
* blog : http://blog.csdn.net/vipzjyno1/
*/
public class MainActivity extends FragmentActivity {
/** 自定义HorizontalScrollView */
private ColumnHorizontalScrollView mColumnHorizontalScrollView;
LinearLayout mRadioGroup_content;
LinearLayout ll_more_columns;
RelativeLayout rl_column;
private ViewPager mViewPager;
private ImageView button_more_columns;
/** 新闻分类列表*/
private ArrayList<NewsClassify> newsClassify=new ArrayList<NewsClassify>();
/** 当前选中的栏目*/
private int columnSelectIndex = 0;
/** 左阴影部分*/
public ImageView shade_left;
/** 右阴影部分 */
public ImageView shade_right;
/** 屏幕宽度 */
private int mScreenWidth = 0;
/** Item宽度 */
private int mItemWidth = 0;
private ArrayList<Fragment> fragments = new ArrayList<Fragment>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mScreenWidth = BaseTools.getWindowsWidth(this);
mItemWidth = mScreenWidth / 7;// 一个Item宽度为屏幕的1/7
initView();
}
/** 初始化layout控件*/
private void initView() {
mColumnHorizontalScrollView = (ColumnHorizontalScrollView)findViewById(R.id.mColumnHorizontalScrollView);
mRadioGroup_content = (LinearLayout) findViewById(R.id.mRadioGroup_content);
ll_more_columns = (LinearLayout) findViewById(R.id.ll_more_columns);
rl_column = (RelativeLayout) findViewById(R.id.rl_column);
button_more_columns = (ImageView) findViewById(R.id.button_more_columns);
mViewPager = (ViewPager) findViewById(R.id.mViewPager);
shade_left = (ImageView) findViewById(R.id.shade_left);
shade_right = (ImageView) findViewById(R.id.shade_right);
button_more_columns.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
});
setChangelView();
}
/**
* 当栏目项发生变化时候调用
* */
private void setChangelView() {
initColumnData();
initTabColumn();
initFragment();
}
/** 获取Column栏目 数据*/
private void initColumnData() {
newsClassify = Constants.getData();
}
/**
* 初始化Column栏目项
* */
private void initTabColumn() {
mRadioGroup_content.removeAllViews();
int count = newsClassify.size();
mColumnHorizontalScrollView.setParam(this, mScreenWidth, mRadioGroup_content, shade_left, shade_right, ll_more_columns, rl_column);
for(int i = 0; i< count; i++){
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(mItemWidth , LayoutParams.WRAP_CONTENT);
params.leftMargin = 10;
params.rightMargin = 10;
// TextView localTextView = (TextView) mInflater.inflate(R.layout.column_radio_item, null);
TextView localTextView = new TextView(this);
localTextView.setTextAppearance(this, R.style.top_category_scroll_view_item_text);
// localTextView.setBackground(getResources().getDrawable(R.drawable.top_category_scroll_text_view_bg));
localTextView.setBackgroundResource(R.drawable.radio_buttong_bg);
localTextView.setGravity(Gravity.CENTER);
localTextView.setPadding(5, 0, 5, 0);
localTextView.setId(i);
localTextView.setText(newsClassify.get(i).getTitle());
localTextView.setTextColor(getResources().getColorStateList(R.color.top_category_scroll_text_color_day));
if(columnSelectIndex == i){
localTextView.setSelected(true);
}
localTextView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
for(int i = 0;i < mRadioGroup_content.getChildCount();i++){
View localView = mRadioGroup_content.getChildAt(i);
if (localView != v)
localView.setSelected(false);
else{
localView.setSelected(true);
mViewPager.setCurrentItem(i);
}
}
Toast.makeText(getApplicationContext(), newsClassify.get(v.getId()).getTitle(), Toast.LENGTH_SHORT).show();
}
});
mRadioGroup_content.addView(localTextView, i ,params);
}
}
/**
* 选择的Column里面的Tab
* */
private void selectTab(int tab_postion) {
columnSelectIndex = tab_postion;
for (int i = 0; i < mRadioGroup_content.getChildCount(); i++) {
View checkView = mRadioGroup_content.getChildAt(tab_postion);
int k = checkView.getMeasuredWidth();
int l = checkView.getLeft();
int i2 = l + k / 2 - mScreenWidth / 2;
// rg_nav_content.getParent()).smoothScrollTo(i2, 0);
mColumnHorizontalScrollView.smoothScrollTo(i2, 0);
// mColumnHorizontalScrollView.smoothScrollTo((position - 2) *
// mItemWidth , 0);
}
//判断是否选中
for (int j = 0; j < mRadioGroup_content.getChildCount(); j++) {
View checkView = mRadioGroup_content.getChildAt(j);
boolean ischeck;
if (j == tab_postion) {
ischeck = true;
} else {
ischeck = false;
}
checkView.setSelected(ischeck);
}
}
/**
* 初始化Fragment
* */
private void initFragment() {
int count = newsClassify.size();
for(int i = 0; i< count;i++){
Bundle data = new Bundle();
data.putString("text", newsClassify.get(i).getTitle());
NewsFragment newfragment = new NewsFragment();
newfragment.setArguments(data);
fragments.add(newfragment);
}
NewsFragmentPagerAdapter mAdapetr = new NewsFragmentPagerAdapter(getSupportFragmentManager(), fragments);
mViewPager.setAdapter(mAdapetr);
mViewPager.setOnPageChangeListener(pageListener);
}
/**
* ViewPager切换监听方法
* */
public OnPageChangeListener pageListener= new OnPageChangeListener(){
@Override
public void onPageScrollStateChanged(int arg0) {
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageSelected(int position) {
// TODO Auto-generated method stub
mViewPager.setCurrentItem(position);
selectTab(position);
}
};
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
package com.topnews.adapter;
import java.util.ArrayList;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.FragmentTransaction;
import android.view.ViewGroup;
public class NewsFragmentPagerAdapter extends FragmentPagerAdapter {
private ArrayList<Fragment> fragments;
private FragmentManager fm;
public NewsFragmentPagerAdapter(FragmentManager fm) {
super(fm);
this.fm = fm;
}
public NewsFragmentPagerAdapter(FragmentManager fm,
ArrayList<Fragment> fragments) {
super(fm);
this.fm = fm;
this.fragments = fragments;
}
@Override
public int getCount() {
return fragments.size();
}
@Override
public Fragment getItem(int position) {
return fragments.get(position);
}
@Override
public int getItemPosition(Object object) {
return POSITION_NONE;
}
public void setFragments(ArrayList<Fragment> fragments) {
if (this.fragments != null) {
FragmentTransaction ft = fm.beginTransaction();
for (Fragment f : this.fragments) {
ft.remove(f);
}
ft.commit();
ft = null;
fm.executePendingTransactions();
}
this.fragments = fragments;
notifyDataSetChanged();
}
@Override
public Object instantiateItem(ViewGroup container, final int position) {
Object obj = super.instantiateItem(container, position);
return obj;
}
}
package com.topnews.tool;
import android.app.Activity;
import android.util.DisplayMetrics;
public class BaseTools {
/** 获取屏幕的宽度 */
public final static int getWindowsWidth(Activity activity) {
DisplayMetrics dm = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
return dm.widthPixels;
}
}
package com.topnews.tool;
import java.util.ArrayList;
import com.topnews.bean.NewsClassify;
public class Constants {
public static ArrayList<NewsClassify> getData() {
ArrayList<NewsClassify> newsClassify = new ArrayList<NewsClassify>();
NewsClassify classify = new NewsClassify();
classify.setId(0);
classify.setTitle("推荐");
newsClassify.add(classify);
classify = new NewsClassify();
classify.setId(1);
classify.setTitle("热点");
newsClassify.add(classify);
classify = new NewsClassify();
classify.setId(2);
classify.setTitle("数码");
newsClassify.add(classify);
classify = new NewsClassify();
classify.setId(3);
classify.setTitle("杭州");
newsClassify.add(classify);
classify = new NewsClassify();
classify.setId(4);
classify.setTitle("社会");
newsClassify.add(classify);
classify = new NewsClassify();
classify.setId(5);
classify.setTitle("娱乐");
newsClassify.add(classify);
classify = new NewsClassify();
classify.setId(6);
classify.setTitle("科技");
newsClassify.add(classify);
classify = new NewsClassify();
classify.setId(7);
classify.setTitle("汽车");
newsClassify.add(classify);
return newsClassify;
}
}
package com.topnews.adapter;
import java.util.ArrayList;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.FragmentTransaction;
import android.view.ViewGroup;
public class NewsFragmentPagerAdapter extends FragmentPagerAdapter {
private ArrayList<Fragment> fragments;
private FragmentManager fm;
public NewsFragmentPagerAdapter(FragmentManager fm) {
super(fm);
this.fm = fm;
}
public NewsFragmentPagerAdapter(FragmentManager fm,
ArrayList<Fragment> fragments) {
super(fm);
this.fm = fm;
this.fragments = fragments;
}
@Override
public int getCount() {
return fragments.size();
}
@Override
public Fragment getItem(int position) {
return fragments.get(position);
}
@Override
public int getItemPosition(Object object) {
return POSITION_NONE;
}
public void setFragments(ArrayList<Fragment> fragments) {
if (this.fragments != null) {
FragmentTransaction ft = fm.beginTransaction();
for (Fragment f : this.fragments) {
ft.remove(f);
}
ft.commit();
ft = null;
fm.executePendingTransactions();
}
this.fragments = fragments;
notifyDataSetChanged();
}
@Override
public Object instantiateItem(ViewGroup container, final int position) {
Object obj = super.instantiateItem(container, position);
return obj;
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<include layout="@layout/main_head" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40.0dip"
android:background="#fff3f3f3"
android:orientation="horizontal" >
<RelativeLayout
android:id="@+id/rl_column"
android:layout_width="match_parent"
android:layout_height="40.0dip"
android:layout_weight="1.0" >
<com.topnews.view.ColumnHorizontalScrollView
android:id="@+id/mColumnHorizontalScrollView"
android:layout_width="match_parent"
android:layout_height="40.0dip"
android:scrollbars="none" >
<LinearLayout
android:id="@+id/mRadioGroup_content"
android:layout_width="fill_parent"
android:layout_height="40.0dip"
android:layout_centerVertical="true"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="10.0dip"
android:paddingRight="10.0dip" />
</com.topnews.view.ColumnHorizontalScrollView>
<ImageView
android:id="@+id/shade_left"
android:layout_width="10.0dip"
android:layout_height="40.0dip"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:background="@drawable/channel_leftblock"
android:visibility="gone" />
<ImageView
android:id="@+id/shade_right"
android:layout_width="10.0dip"
android:layout_height="40.0dip"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:background="@drawable/channel_rightblock"
android:visibility="visible" />
</RelativeLayout>
<LinearLayout
android:id="@+id/ll_more_columns"
android:layout_width="wrap_content"
android:layout_height="40.0dip" >
<ImageView
android:id="@+id/button_more_columns"
android:layout_width="40.0dip"
android:layout_height="40.0dip"
android:layout_gravity="center_vertical"
android:src="@drawable/channel_glide_day_bg" />
</LinearLayout>
</LinearLayout>
<View
android:id="@+id/category_line"
android:layout_width="fill_parent"
android:layout_height="0.5dip"
android:background="#ffdddddd" />
<android.support.v4.view.ViewPager
android:id="@+id/mViewPager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
