android 滑动欢迎界面

android 滑动欢迎界面

import java.util.ArrayList;

import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.os.Parcelable; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.view.ViewGroup.LayoutParams; import android.view.Window; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast;

import com.lenovo.elec.R;

/** * 使用向导 * * @author * */ public class GuideActivity extends Activity { protected static final String TAG = "GuideActivity"; ViewPager viewPager; ArrayList list; ViewGroup main, group; ImageView imageView; ImageView[] imageViews; View view5; private Button guide_start; private Intent intent; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 设置无标题 this.requestWindowFeature(Window.FEATURE_NO_TITLE); LayoutInflater inflater = getLayoutInflater(); list = new ArrayList(); list.add(inflater.inflate(R.layout.guideitem1, null)); list.add(inflater.inflate(R.layout.guideitem2, null)); list.add(inflater.inflate(R.layout.guideitem3, null)); list.add(inflater.inflate(R.layout.guideitem4, null)); view5 = inflater.inflate(R.layout.guideitem5, null); list.add(view5); imageViews = new ImageView[list.size()]; ViewGroup main = (ViewGroup) inflater.inflate(R.layout.guide, null); // group是R.layou.guide中的负责包裹小圆点的LinearLayout. ViewGroup group = (ViewGroup) main.findViewById(R.id.viewGroup); viewPager = (ViewPager) main.findViewById(R.id.viewPager); for (int i = 0; i < list.size(); i++) { imageView = new ImageView(this); imageView.setLayoutParams(new LayoutParams(30, 20)); imageView.setPadding(15, 0, 15, 0); imageViews[i] = imageView; if (i == 0) { imageViews[i].setBackgroundResource(R.drawable.guide_dot_blue); // 默认进入程序后第一张图片被选中; } else { imageViews[i].setBackgroundResource(R.drawable.guide_dot_white); } group.addView(imageView); } setContentView(main); guide_start = (Button) view5.findViewById(R.id.guide_start); guide_start.setOnClickListener(new OnClickListener() { public void onClick(View v) { intent = new Intent(GuideActivity.this, CustomTabActivity.class); startActivity(intent); Toast.makeText(getApplicationContext(), "进入我的小屋", 0).show(); finish(); } }); viewPager.setAdapter(new MyAdapter()); viewPager.setOnPageChangeListener(new MyListener()); } /** * 返回键退出 */ @Override public void onBackPressed() { } class MyAdapter extends PagerAdapter { @Override public int getCount() { return list.size(); } @Override public boolean isViewFromObject(View arg0, Object arg1) { return arg0 == arg1; } @Override public int getItemPosition(Object object) { return super.getItemPosition(object); } @Override public void destroyItem(View arg0, int arg1, Object arg2) { ((ViewPager) arg0).removeView(list.get(arg1)); } @Override public Object instantiateItem(View arg0, int arg1) { ((ViewPager) arg0).addView(list.get(arg1)); return list.get(arg1); } @Override public void restoreState(Parcelable arg0, ClassLoader arg1) { } @Override public Parcelable saveState() { return null; } @Override public void startUpdate(View arg0) { } @Override public void finishUpdate(View arg0) { } } class MyListener implements OnPageChangeListener { public void onPageScrollStateChanged(int arg0) { } public void onPageScrolled(int arg0, float arg1, int arg2) { } public void onPageSelected(int arg0) { for (int i = 0; i < imageViews.length; i++) { imageViews[arg0].setBackgroundResource(R.drawable.guide_dot_blue); if (arg0 != i) { imageViews[i].setBackgroundResource(R.drawable.guide_dot_white); } } } }}

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