TabLayout+PullToRefresh+数据库缓存+频道管理
记得加权限！导依赖！！！
创建基类
public abstract class BaseActivity extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(onResID());
onView();
onData();
}
protected abstract int onResID();
protected abstract void onView();
protected abstract void onData();
}
public abstract class BaseFragment extends Fragment {
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view=View.inflate(getContext(),onResID(),null);
onView(view);
onData();
return view;
}
protected abstract int onResID();
protected abstract void onView(View view);
protected abstract void onData();
}
主页面
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<android.support.v4.widget.DrawerLayout
android:id="@+id/draw"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/frag"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp"></FrameLayout>
<RadioGroup
android:id="@+id/radio"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RadioButton
android:id="@+id/button"
android:drawableTop="@drawable/selector"
android:button="@null"
android:text="首页"
android:layout_weight="1"
android:gravity="center"
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/button2"
android:drawableTop="@drawable/selector"
android:button="@null"
android:text="自选"
android:layout_weight="1"
android:gravity="center"
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/button3"
android:drawableTop="@drawable/selector"
android:button="@null"
android:text="行情"
android:layout_weight="1"
android:gravity="center"
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/button4"
android:drawableTop="@drawable/selector"
android:button="@null"
android:text="咨询"
android:layout_weight="1"
android:gravity="center"
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/button5"
android:drawableTop="@drawable/selector"
android:button="@null"
android:text="交易"
android:layout_weight="1"
android:gravity="center"
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RadioGroup>
</LinearLayout>
<LinearLayout
android:background="#999"
android:layout_gravity="left"
android:layout_width="300dp"
android:layout_height="match_parent">
<com.bwei.xlistview.XlistView
android:id="@+id/xlistview"
android:layout_width="match_parent"
android:layout_height="match_parent"></com.bwei.xlistview.XlistView>
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
</LinearLayout>
public class MainActivity extends BaseActivity implements DrawerLayout.DrawerListener, RadioGroup.OnCheckedChangeListener {
private DrawerLayout draw;
private RadioGroup radioGroup;
private FragmentManager manager;
private Frag_01 frag_01;
private Frag_02 frag_02;
private Frag_03 frag_03;
private Frag_04 frag_04;
private Frag_05 frag_05;
private String path="http://mnews.gw.com.cn/wap/data/news/xbsjxw/page_1.json";
private XlistView xlistView;
@Override
protected int onResID() {
return R.layout.activity_main;
}
@Override
protected void onView() {
draw = (DrawerLayout)findViewById(R.id.draw);
radioGroup = (RadioGroup)findViewById(R.id.radio);
draw.addDrawerListener(this);
radioGroup.setOnCheckedChangeListener(this);
xlistView = (XlistView)findViewById(R.id.xlistview);
}
@Override
protected void onData() {
manager = getSupportFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
frag_01 = new Frag_01();
frag_02 = new Frag_02();
frag_03 = new Frag_03();
frag_04 = new Frag_04();
frag_05 = new Frag_05();
transaction.add(R.id.frag, frag_01);
transaction.add(R.id.frag, frag_02);
transaction.add(R.id.frag, frag_03);
transaction.add(R.id.frag, frag_05);
transaction.add(R.id.frag, frag_04);
transaction.show(frag_04).hide(frag_01).hide(frag_02).hide(frag_03).hide(frag_05);
transaction.commit();
getData();
}
private void getData() {
MyAsyncTask myAsyncTask=new MyAsyncTask();
myAsyncTask.execute();
}
private class MyAsyncTask extends AsyncTask<String,Integer,String>{
@Override
protected String doInBackground(String... strings) {
try {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(50000);
conn.setReadTimeout(5000);
conn.setRequestMethod("GET");
if (conn.getResponseCode() == 200) {
InputStream inputStream = conn.getInputStream();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
byte[] bytes = new byte[1024];
int len = 0;
while ((len = inputStream.read(bytes)) != -1) {
stream.write(bytes, 0, len);
}
stream.close();
inputStream.close();
String data = stream.toString();
return data;
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
try {
JSONArray jsonArray = new JSONArray(s);
JSONObject jsonObject = jsonArray.getJSONObject(0);
String data = jsonObject.toString();
Log.i("xxx", data);
Gson gson = new Gson();
Datas datas = gson.fromJson(data, Datas.class);
List<Datas.DataBean> data1 = datas.getData();
PullAdapter pullAdapter = new PullAdapter(MainActivity.this, data1);
xlistView.setAdapter(pullAdapter);
} catch (Exception e) {
e.printStackTrace();
}
}
}
@Override
public void onDrawerSlide(@NonNull View view, float v) {
}
@Override
public void onDrawerOpened(@NonNull View view) {
}
@Override
public void onDrawerClosed(@NonNull View view) {
}
@Override
public void onDrawerStateChanged(int i) {
}
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
FragmentTransaction transaction = manager.beginTransaction();
switch (checkedId){
case R.id.button:
transaction.show(frag_01).hide(frag_04).hide(frag_02).hide(frag_03).hide(frag_05);
break;
case R.id.button2:
transaction.show(frag_02).hide(frag_04).hide(frag_01).hide(frag_03).hide(frag_05);
break;
case R.id.button3:
transaction.show(frag_03).hide(frag_04).hide(frag_02).hide(frag_01).hide(frag_05);
break;
case R.id.button4:
transaction.show(frag_04).hide(frag_01).hide(frag_02).hide(frag_03).hide(frag_05);
break;
case R.id.button5:
transaction.show(frag_05).hide(frag_04).hide(frag_02).hide(frag_03).hide(frag_01);
break;
}
transaction.commit();
}
}
创建fragment
public class Frag_01 extends BaseFragment {
@Override
protected int onResID() {
return R.layout.frag_02;
}
@Override
protected void onView(View view) {
}
@Override
protected void onData() {
}
}
public class Frag_04 extends BaseFragment {
private TabLayout tab;
private ViewPager pager;
private ImageView img;
private ArrayList<ChannelItem> tabData;
@Override
protected int onResID() {
return R.layout.frag_01;
}
@Override
protected void onView(View view) {
tab = (TabLayout)view.findViewById(R.id.tab);
pager = (ViewPager)view.findViewById(R.id.pager);
ArrayList<String> tabList=getTabList();
tabData = DBUtil.getTabData(getActivity());
pager.setAdapter(new TabAdapter(getChildFragmentManager(),tabData));
pager.setOffscreenPageLimit(tabList.size());
tab.setupWithViewPager(pager);
img = (ImageView)view.findViewById(R.id.img);
}
private ArrayList<String> getTabList() {
ArrayList<String> tablist=new ArrayList<>();
tablist.add("新闻");
tablist.add("快讯");
tablist.add("头条");
tablist.add("精编公告");
tablist.add("美股");
tablist.add("港股");
tablist.add("基金");
tablist.add("理财");
return tablist;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
tabData.clear();
ArrayList<ChannelItem> tabData = DBUtil.getTabData(getActivity());
pager.setAdapter(new TabAdapter(getChildFragmentManager(), tabData));
}
@Override
protected void onData() {
img.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivityForResult(new Intent(getActivity(),ChannelActivity.class),0);
}
});
}}
public class Fragments extends BaseFragment {
private String path = "http://mnews.gw.com.cn/wap/data/news/";
private Handler handler = new Handler();
private int type;
private int page = 1;
private PullToRefreshListView pull;
private ArrayList<Datas.DataBean> list = null;
private String arr[] = {"xbsjxw", "txs", "toutiao", "news/mobile/jbgg", "news/mobile/mgxw", "news/mobile/ggxw", "news/mobile/jjxw", "news/mobile/lcxw"};
@Override
protected int onResID() {
return R.layout.fragments;
}
@Override
protected void onView(View view) {
int position=getArguments().getInt("position");
position=position%3;
type=position+1;
pull = (PullToRefreshListView)view.findViewById(R.id.pull);
pull.setPullToRefreshEnabled(true);
pull.setMode(PullToRefreshBase.Mode.BOTH);
}
@Override
protected void onData() {
pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
@Override
public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
boolean network = NetWork.isNetwork(getActivity());
if (network){
handler.postDelayed(new Runnable() {
@Override
public void run() {
page=1;
getAsync(path + arr[type] + "/page_" + page + ".json");
pull.onRefreshComplete();
}
},2000);
}else {
handler.postDelayed(new Runnable() {
@Override
public void run() {
pull.onRefreshComplete();
}
},2000);
}
}
@Override
public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
boolean network = NetWork.isNetwork(getActivity());
if (network) {
handler.postDelayed(new Runnable() {
@Override
public void run() {
page++;
getAsync(path + arr[type] + "/page_" + page + ".json");
pull.onRefreshComplete();
}
}, 2000);
} else {
handler.postDelayed(new Runnable() {
@Override
public void run() {
pull.onRefreshComplete();
}
}, 2000);
}
}
});
getInterent();
}
private void getInterent() {
NetInterent netInterent = new NetInterent();
IntentFilter filter = new IntentFilter();
filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
getActivity().registerReceiver(netInterent, filter);
}
private class NetInterent extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
boolean network = NetWork.isNetwork(getActivity());
if (network) {
getAsync(path + arr[type] + "/page_" + page + ".json");
} else {
Dao mySqlDao = new Dao(getActivity());
ArrayList<Datas.DataBean> select = mySqlDao.select();
PullAdapter pullAdapter = new PullAdapter(getActivity(), select);
pull.setAdapter(pullAdapter);
}
}
}
private void getAsync(String s) {
MyAsyncTask myAsyncTask=new MyAsyncTask();
myAsyncTask.execute(s);
}
private class MyAsyncTask extends AsyncTask<String,Integer,String>{
@Override
protected String doInBackground(String... strings) {
return Conntent.isNetConnection(strings[0]);
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
try {
JSONArray jsonArray = new JSONArray(s);
JSONObject jsonObject = jsonArray.getJSONObject(0);
String data = jsonObject.toString();
Log.i("xxx", data);
Gson gson = new Gson();
Datas datas = gson.fromJson(data, Datas.class);
List<Datas.DataBean> data1 = datas.getData();
Dao mySqlDao = new Dao(getActivity());
if (page == 1) {
list = new ArrayList<>();
mySqlDao.delete();
mySqlDao.add(data1);
}
list.addAll(data1);
PullAdapter pullAdapter = new PullAdapter(getActivity(), list);
pull.setAdapter(pullAdapter);
pull.setSelection(pullAdapter.getCount() - data1.size());
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
布局
frag01
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#ff0"
tools:context=".MainActivity">
</LinearLayout>
frag02
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TabLayout
app:tabMode="scrollable"
android:id="@+id/tab"
android:layout_width="0dp"
android:layout_weight="5"
android:layout_height="50dp"></android.support.design.widget.TabLayout>
<ImageView
android:id="@+id/img"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:src="@drawable/kind_liner" />
</LinearLayout>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="wrap_content"
android:layout_height="match_parent"></android.support.v4.view.ViewPager>
</LinearLayout>
fragments
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<com.handmark.pulltorefresh.library.PullToRefreshListView
android:id="@+id/pull"
android:layout_width="match_parent"
android:layout_height="match_parent"></com.handmark.pulltorefresh.library.PullToRefreshListView>
</LinearLayout>
网络判断
public class NetWork {
public static boolean isNetwork(Context context) {
ConnectivityManager conn = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = conn.getActiveNetworkInfo();
if (info != null) {
return info.isAvailable();
}
return false;
}
}
public class Conntent {
public static String isNetConnection(String path) {
try {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(50000);
conn.setReadTimeout(5000);
conn.setRequestMethod("GET");
if (conn.getResponseCode() == 200) {
InputStream inputStream = conn.getInputStream();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
byte[] bytes = new byte[1024];
int len = 0;
while ((len = inputStream.read(bytes)) != -1) {
stream.write(bytes, 0, len);
}
stream.close();
inputStream.close();
String data = stream.toString();
return data;
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
适配器
public class TabAdapter extends FragmentPagerAdapter {
ArrayList<ChannelItem> list;
public TabAdapter(FragmentManager fm, ArrayList<ChannelItem> tabData) {
super(fm);
this.list=tabData;
}
@Override
public Fragment getItem(int i) {
Fragments fragments=new Fragments();
Bundle bundle=new Bundle();
bundle.putInt("position",i);
fragments.setArguments(bundle);
return fragments;
}
@Override
public int getCount() {
return list.size();
}
@Nullable
@Override
public CharSequence getPageTitle(int position) {
return list.get(position).getName();
}
}
public class PullAdapter extends BaseAdapter {
private Context context;
private List<Datas.DataBean> list;
private static final int TYPE_ONE = 0;
private static final int TYPE_TWO = 1;
public PullAdapter(Context context, List<Datas.DataBean> list) {
this.context = context;
this.list = list;
}
@Override
public int getViewTypeCount() {
return 2;
}
@Override
public int getItemViewType(int position) {
return position % 2;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
int itemViewType = getItemViewType(position);
if (convertView == null) {
switch (itemViewType) {
case TYPE_ONE:
convertView = View.inflate(context, R.layout.item_list2, null);
viewHolder = new ViewHolder();
viewHolder.img1 = convertView.findViewById(R.id.img1);
viewHolder.title1 = convertView.findViewById(R.id.title1);
convertView.setTag(viewHolder);
break;
case TYPE_TWO:
convertView = View.inflate(context, R.layout.item_list, null);
viewHolder = new ViewHolder();
viewHolder.title2 = convertView.findViewById(R.id.title2);
convertView.setTag(viewHolder);
break;
}
} else {
switch (itemViewType) {
case TYPE_ONE:
viewHolder = (ViewHolder) convertView.getTag();
break;
case TYPE_TWO:
viewHolder = (ViewHolder) convertView.getTag();
break;
}
}
DisplayImageOptions options = new DisplayImageOptions.Builder()
.cacheOnDisk(true)
.showImageForEmptyUri(R.mipmap.ic_launcher_round)
.showImageOnFail(R.mipmap.ic_launcher_round)
.build();
//赋值
switch (itemViewType) {
case TYPE_ONE:
viewHolder.title1.setText(list.get(position).getTitle());
String img = list.get(position).getImg();
ImageLoader.getInstance().displayImage(list.get(position).getImg(), viewHolder.img1, options);
break;
case TYPE_TWO:
viewHolder.title2.setText(list.get(position).getTitle());
break;
}
return convertView;
}
class ViewHolder {
TextView title1, title2;
ImageView img1;
}
}
适配器布局
item_list
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<TextView
android:id="@+id/title2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hhhhhh"
android:textSize="20sp" />
</LinearLayout>
item_list2
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<ImageView
android:id="@+id/img1"
android:layout_width="100dp"
android:layout_height="100dp"
android:src="@mipmap/ic_launcher" />
<TextView
android:id="@+id/title1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hhhhhh"
android:textSize="20sp" />
</LinearLayout>
ImageLoader
public class MyAppliaction extends ChannelApplication {
@Override
public void onCreate() {
super.onCreate();
File file = StorageUtils.getCacheDirectory(this);
ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this)
.threadPoolSize(5 * 1024 * 1024)
.threadPriority(Thread.NORM_PRIORITY - 2)
.diskCache(new UnlimitedDiskCache(file))
.diskCacheFileCount(50)
.diskCacheSize(50 * 1024 * 1024)
.diskCacheFileNameGenerator(new Md5FileNameGenerator())
.build();
ImageLoader.getInstance().init(configuration);
}
}
数据库
public class MySQLite extends SQLiteOpenHelper {
public MySQLite(Context context) {
super(context, "bw", null, 1);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("create table moni2(title text,url text)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}
dao
public class Dao {
private SQLiteDatabase db;
public Dao(Context context) {
MySQLite mySql = new MySQLite(context);
db = mySql.getWritableDatabase();
}
public void add(List<Datas.DataBean> dataBeans) {
for (int i = 0; i < dataBeans.size(); i++) {
ContentValues values = new ContentValues();
values.put("title", dataBeans.get(i).getTitle());
values.put("url", dataBeans.get(i).getUrl());
db.insert("moni2", null, values);
}
}
public ArrayList<Datas.DataBean> select() {
ArrayList<Datas.DataBean> list = new ArrayList<>();
Cursor moni2 = db.query("moni2", null, null, null, null, null, null, null);
if (moni2.moveToFirst()){
do{
Datas.DataBean bean = new Datas.DataBean();
bean.setTitle(moni2.getString(moni2.getColumnIndex("title")));
bean.setUrl(moni2.getString(moni2.getColumnIndex("url")));
list.add(bean);
}while (moni2.moveToNext());
}
return list;
}
public void delete(){
db.delete("moni2",null,null);
}
}