一款通用的欢迎页，可以有多张图片
自定义欢迎页张数，带应到点。多的不说了，直接上代码。
效果大家可以自己试一下，
import java.util.ArrayList;
import java.util.List;import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;import com.facebook.drawee.view.SimpleDraweeView;/*** @项目名称： Make_wish* @类名称： Welcome_Activity.java* @创建人： Mr.ladeng (zbl704@yeah.net)* @创建时间： 2015-5-11下午8:09:42* @修改备注： * @version 1.0 * @类描述：引导欢迎页面，首次安装会进入这个界面*/
public class Welcome_Activity extends BaseActivity {private TextView wel_jump;private ImageView tv;private ViewPager vp;// 页卡内容private List datas; // Tab页面列表private LinearLayout ll_points;//ArrayList imageP ;private static final String SHAREDPREFERENCES_NAME = "first_pref";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);PushAgent.getInstance(this).onAppStart();// 设置全屏requestWindowFeature(Window.FEATURE_NO_TITLE); // 无titlegetWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN); // 全屏setContentView(R.layout.welcome_activity);(new GetWelcomeImg()).execute();//Bundle bundle=getIntent().getExtras();//imageP =bundle.getParcelableArrayList("img");// 初始化initView();}private void initView() {wel_jump = (TextView) findViewById(R.id.wel_jump);tv = (ImageView) findViewById(R.id.wel_tv);vp = (ViewPager) findViewById(R.id.vp);ll_points = (LinearLayout) findViewById(R.id.ll_points);initDatas(imageP);vp.setOffscreenPageLimit(3);vp.setAdapter(new MyPagerAdapter());setListener();}/** 未选中 */private int prePosition = 0;@SuppressWarnings("deprecation")private void setListener() {/** 设置小圆点**/vp.setOnPageChangeListener(new OnPageChangeListener() {@Overridepublic void onPageSelected(int position) {ll_points.getChildAt(position).setBackgroundResource(R.drawable.wel_dot_enable);//选中背景色ll_points.getChildAt(prePosition).setBackgroundResource(R.drawable.wel_normal);//未选中背景色/** 选中 */prePosition = position;/*** 设置tv可见 当position为第4个图片的时候激活下面的方法 其他时候都是不可见的* 下面一个动画 ，在最后一个页面的时候可以通过动画跳转到主界面*/if (position == datas.size() - 1) {wel_jump.setVisibility(View.VISIBLE);//跳过}else {wel_jump.setVisibility(View.GONE);//跳过}}@Overridepublic void onPageScrolled(int arg0, float arg1, int arg2) {}@Overridepublic void onPageScrollStateChanged(int arg0) {}});/*** 设置点击跳转*/wel_jump.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {setGuided();openActivity(LoginActivity.class);finish();}});tv.setOnClickListener(new OnClickListener() {@Override// 点击方法public void onClick(View v) {setGuided();openActivity(LoginActivity.class);finish();}});}/*** * method desc：设置已经引导过了，下次启动不用再次引导*/private void setGuided(){SharedPreferences preferences = getSharedPreferences( SHAREDPREFERENCES_NAME, MODE_PRIVATE);Editor editor = preferences.edit();// 存入数据editor.putBoolean("isFirstIn", false);// 提交修改editor.commit();}// 将图片添加到界面上private void initDatas(ArrayList imageP) {datas = new ArrayList();for (int i = 0; i < imageP.size() ; i++) {SimpleDraweeView iv = new SimpleDraweeView(Welcome_Activity.this);FrescoUtils.loadImageStart( iv , imageP.get(i).imgs);datas.add(iv);int px2dp = ScreenUtils.px2dp(getApplicationContext(), 30);int screenWidth = ScreenUtils.getScreenWidth(getApplicationContext());if (screenWidth>=1080) {px2dp = 30 ;}View view = new View(this);// 为这个view设置背景 未选中状态背景色view.setBackgroundResource(R.drawable.wel_normal); // 定义布局参数，并给view设置参数(宽，高)LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(px2dp , px2dp);params.leftMargin = px2dp ;view.setLayoutParams(params);// 将定义好的view加入到线性布局中ll_points.addView(view);}ll_points.getChildAt(0).setBackgroundResource(R.drawable.wel_dot_enable);//选中状态背景色}private class MyPagerAdapter extends PagerAdapter {// viewPager的页数@Overridepublic int getCount() {return datas.size();}@Overridepublic boolean isViewFromObject(View view, Object obj) {return view == obj;}// 初始化条目@Overridepublic Object instantiateItem(ViewGroup container, int position) {// 必须要加入到ViewGroup中container.addView(datas.get(position));return datas.get(position);}// 从ViewPager中移除@Overridepublic void destroyItem(ViewGroup container, int position, Object object) {container.removeView(datas.get(position));}}/********* 欢迎页 start******** */class GetWelcomeImg extends AsyncTask {private String flag;ArrayList imageP ;GetWelcomeImg() {imageP = new ArrayList ();}@Overrideprotected void onPreExecute() {}@Overrideprotected Integer doInBackground(Void... params) {JSONObject jsonObject = JsonUtils.ReadHttpGet(Constant.WelcomeImg);Integer result = 0;if (null != jsonObject) {try {flag = jsonObject.getString("flag").toString().trim();if (flag.equals("1")) {JSONArray jsonArray = new JSONArray(jsonObject.getString("data"));ImagePage imagePage ;for (int i = 0; i < jsonArray.length(); i++) {imagePage = new ImagePage();JSONObject temp = (JSONObject) jsonArray.get(i);imagePage.imgs = temp.getString("pic");imageP.add(imagePage);}result = 1;}else {result = 0;}} catch (JSONException e) {e.printStackTrace();result = 0;}}return result;}@Overrideprotected void onPostExecute(Integer result) {// over do somethhing if (1 == result) {initDatas(imageP);vp.setOffscreenPageLimit(3);vp.setAdapter(new MyPagerAdapter());setListener();}else {openActivity(LoginActivity.class);finish();}super.onPostExecute(result);}@Overrideprotected void onProgressUpdate(Integer... values) {}}class ImagePage {public String imgs ;}/** 异步任务 end ******** *//****************** 欢迎页##### *********************/@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK) {return true;}return super.onKeyDown(keyCode, event);}}
布局代码
需要图片资源
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