三秒跳转和二次进入和按钮在最后一张图片上

package fragment.bwie.com.lianxi18;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
if (msg.what > 0) {
handler.sendEmptyMessageDelayed(0, 3000);
} else {
SharedPreferences preferences = MainActivity.this.getSharedPreferences("config", Context.MODE_PRIVATE);
SharedPreferences.Editor edit = preferences.edit();
edit.commit();
SharedPreferences sharedPreferences = MainActivity.this.getSharedPreferences("config", Context.MODE_PRIVATE);
boolean name = sharedPreferences.getBoolean("che", false);
if (name) {
Intent intent = new Intent(MainActivity.this, TiaoZhuanActivity.class);
startActivity(intent);
finish();
} else {
Intent intent = new Intent(MainActivity.this, WebActivity.class);
startActivity(intent);
finish();
}
}
}
};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
handler.sendEmptyMessageDelayed(0, 3000);
}
}

-----------------

package fragment.bwie.com.lianxi18;

import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
[b]import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import com.google.gson.Gson;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import fragment.bwie.com.lianxi18.adapter.TuAdapter;
import fragment.bwie.com.lianxi18.bean.TuBean;

/**
* Created by CZ on 2017/9/20.
*/
public class WebActivity extends Activity implements View.OnClickListener {

private ViewPager pager;
private Button button;
private List<TuBean.ResultBean.DataBean> list;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_web);
pager = (ViewPager) findViewById(R.id.pager);
button = (Button) findViewById(R.id.button);
button.setOnClickListener(this);
AsyncTask<Void, Void, String> asyncTask = new AsyncTask<Void, Void, String>() {
@Override
protected String doInBackground(Void... voids) {
String path = "http://apis.juhe.cn/cook/query?key=ab2da3f9abd4556dfd68086a66ffc4a8&menu=%E8%A5%BF%E7%BA%A2%E6%9F%BF&rn=5&pn=1";
try {
URL url = new URL(path);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setConnectTimeout(5000);
urlConnection.setReadTimeout(5000);
int responseCode = urlConnection.getResponseCode();
if (responseCode == 200) {
InputStream inputStream = urlConnection.getInputStream();
String json = streamTostring(inputStream, "utf-8");
return json;
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}

@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
Gson gson = new Gson();
TuBean tuBean = gson.fromJson(s, TuBean.class);
list = tuBean.getResult().getData();

List<String> image = new ArrayList<>();
Log.i("--------------", image.toString());

for (int i = 0; i < list.size(); i++) {
image.add(String.valueOf(list.get(i).getAlbums().get(0)));
}
TuAdapter tuAdapter = new TuAdapter(image, WebActivity.this);
pager.setAdapter(tuAdapter);

pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
if (position == list.size() - 1) {
button.setVisibility(View.VISIBLE);
} else {
button.setVisibility(View.GONE);
}
}

@Override
public void onPageSelected(int position) {

}

@Override
public void onPageScrollStateChanged(int state) {

}
});
}
};
asyncTask.execute();
}

private String streamTostring(InputStream inputStream, String s) {
try {
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, s);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
StringBuilder builder = new StringBuilder();
String string = null;
while ((string = bufferedReader.readLine()) != null) {
builder.append(string);
}
bufferedReader.close();
return builder.toString();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}

@Override
public void onClick(View view) {
Intent intent = new Intent(WebActivity.this, TiaoZhuanActivity.class);
startActivity(intent);
}
}

--------------------------------第三张页面

package fragment.bwie.com.lianxi18;

import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.widget.DrawerLayout;
import android.widget.ArrayAdapter;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.List;

import fragment.bwie.com.lianxi18.fragment.NewsFragment;

/**
* Created by CZ on 2017/9/20.
*/
public class TiaoZhuanActivity extends FragmentActivity {

private DrawerLayout drawerLayout;
private FrameLayout frameLayout;
private LinearLayout linearLayout;
private ListView listView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
frameLayout = (FrameLayout) findViewById(R.id.frme_layout);
linearLayout = (LinearLayout) findViewById(R.id.linear_layout);
listView = (ListView) findViewById(R.id.list_view);

SharedPreferences preferences = TiaoZhuanActivity.this
.getSharedPreferences("config", Context.MODE_PRIVATE);
SharedPreferences.Editor edit = preferences.edit();
edit.putBoolean("che", true);
edit.commit();
int launcher = R.mipmap.ic_launcher;
List<String> list = new ArrayList<>();
list.add("微信登录");
list.add("QQ登录");
list.add("微博登录");

ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(TiaoZhuanActivity.this, android.R.layout.simple_list_item_1, android.R.id.text1, list);
listView.setAdapter(arrayAdapter);

getSupportFragmentManager().beginTransaction().replace(R.id.frme_layout, new NewsFragment()).commit();
drawerLayout.closeDrawer(linearLayout);

}
}