2 import android.content.Intent;
3 import android.content.SharedPreferences;
4 import android.content.SharedPreferences.Editor;
5 import android.os.Bundle;
6 import android.os.Handler;
7
8 /** 歡迎界面 */
9 public class WelcomeAct extends Activity {
10
11 private boolean isFirstIn = false;
12 private static final int TIME = 2000;
13 private static final int GO_HOME = 1000;
14 private static final int GO_GUIDE = 1001;
15
16 private Handler mHandler = new Handler() {
17 public void handleMessage(android.os.Message msg) {
18 switch (msg.what) {
19 // 跳入主界面
20 case GO_HOME:
21 goHome();
22 break;
23 // 跳入引導頁
24 case GO_GUIDE:
25 goGuide();
26 break;
27 }
28 };
29 };
30
31 @Override
32 protected void onCreate(Bundle savedInstanceState) {
33 super.onCreate(savedInstanceState);
34 setContentView(R.layout.welcome);
35 init();
36 }
37
38 private void init() {
39 SharedPreferences perPreferences = getSharedPreferences("jike",
40 MODE_PRIVATE);
41 isFirstIn = perPreferences.getBoolean("isFirstIn", true);
42 if (!isFirstIn) {
43 mHandler.sendEmptyMessageDelayed(GO_HOME, TIME);
44 } else {
45 mHandler.sendEmptyMessageDelayed(GO_GUIDE, TIME);
46 Editor editor = perPreferences.edit();
47 editor.putBoolean("isFirstIn", false);
48 editor.commit();
49 }
50 }
51
52 private void goHome() {
53 Intent i = new Intent(WelcomeAct.this, MainActivity.class);
54 startActivity(i);
55 finish();
56 }
57
58 private void goGuide() {
59 Intent i = new Intent(WelcomeAct.this, Guide.class);
60 startActivity(i);
61 finish();
62 }
63
64 }
1 import java.util.ArrayList;
2 import java.util.List;
3 import android.app.Activity;
4 import android.content.Intent;
5 import android.os.Bundle;
6 import android.support.v4.view.ViewPager;
7 import android.support.v4.view.ViewPager.OnPageChangeListener;
8 import android.view.LayoutInflater;
9 import android.view.View;
10 import android.view.View.OnClickListener;
11 import android.widget.Button;
12 import android.widget.ImageView;
13
14 /** 引導頁 */
15 public class Guide extends Activity implements OnPageChangeListener {
16
17 private ViewPager vp;
18 private ViewPagerAdapter vpAdapter;
19 private List<View> views;
20 private ImageView[] dots;
21 private int[] ids = { R.id.iv1, R.id.iv2, R.id.iv3 };
22 private Button start_btn;
23
24 @Override
25 protected void onCreate(Bundle savedInstanceState) {
26 super.onCreate(savedInstanceState);
27 setContentView(R.layout.guide);
28 initViews();
29 initDots();
30 }
31
32 private void initViews() {
33 LayoutInflater inflater = LayoutInflater.from(this);
34
35 views = new ArrayList<View>();
36 views.add(inflater.inflate(R.layout.one, null));
37 views.add(inflater.inflate(R.layout.two, null));
38 views.add(inflater.inflate(R.layout.three, null));
39
40 vpAdapter = new ViewPagerAdapter(views, this);
41 vp = (ViewPager) findViewById(R.id.viewpager);
42 vp.setAdapter(vpAdapter);
43 // 下標從0開始，所以第三個頁面是get(2)。
44 start_btn = (Button) views.get(2).findViewById(R.id.start_btn);
45 start_btn.setOnClickListener(new OnClickListener() {
46 @Override
47 public void onClick(View arg0) {
48 Intent i = new Intent(Guide.this, MainActivity.class);
49 startActivity(i);
50 finish();
51 }
52 });
53 vp.setOnPageChangeListener(this);
54 }
55
56 /** 循環設置點 */
57 private void initDots() {
58 dots = new ImageView[views.size()];
59 for (int i = 0; i < views.size(); i++) {
60 dots[i] = (ImageView) findViewById(ids[i]);
61 }
62 }
63
64 @Override /** 滑動狀態改變的時候 */
65 public void onPageScrollStateChanged(int arg0) {
66 // TODO Auto-generated method stub
67 }
68
69 @Override /** 當頁面被滑動時候調用 */
70 public void onPageScrolled(int arg0, float arg1, int arg2) {
71 // TODO Auto-generated method stub
72 }
73
74 @Override /** 當前新的頁面被選中時調用 */
75 public void onPageSelected(int arg0) {
76 for (int i = 0; i < ids.length; i++) {
77 if (arg0 == i) {
78 // 亮點
79 dots[i].setImageResource(R.drawable.login_point_selected);
80 } else {
81 // 暗點
82 dots[i].setImageResource(R.drawable.login_point);
83 }
84 }
85 }
86
87 }
1 <?xml version="1.0" encoding="utf-8"?>
2 <RelativeLayout xmlns:android="/apk/res/android"
3 android:layout_width="match_parent"
4 android:layout_height="match_parent" >
5
6 <android.support.v4.view.ViewPager
7 android:id="@+id/viewpager"
8 android:layout_width="fill_parent"
9 android:layout_height="fill_parent"
10 android:background="#00000000" >
11 </android.support.v4.view.ViewPager>
12
13 <!-- 底部三個點 -->
14 <LinearLayout
15 android:id="@+id/ll"
16 android:layout_width="fill_parent"
17 android:layout_height="wrap_content"
18 android:layout_alignParentBottom="true"
19 android:gravity="center_horizontal"
20 android:orientation="horizontal" >
21 <!-- 選中點 -->
22 <ImageView
23 android:id="@+id/iv1"
24 android:layout_width="wrap_content"
25 android:layout_height="wrap_content"
26 android:src="@drawable/login_point_selected" />
27 <!-- 未選中點 -->
28 <ImageView
29 android:id="@+id/iv2"
30 android:layout_width="wrap_content"
31 android:layout_height="wrap_content"
32 android:src="@drawable/login_point" />
33 <!-- 未選中點 -->
34 <ImageView
35 android:id="@+id/iv3"
36 android:layout_width="wrap_content"
37 android:layout_height="wrap_content"
38 android:src="@drawable/login_point" />
39 </LinearLayout>
40
41 </RelativeLayout>