用FragmentActivity模仿qq群组,好友等滑动界面切换.

红太狼 2022-01-16 10:57 221阅读 0赞

[2019独角兽企业重金招聘Python工程师标准>>> ][2019_Python_] ![hot3.png][]

效果如图

![17100524_51GG.jpg][]

下载地址 [http://download.csdn.net/my/uploads][http_download.csdn.net_my_uploads]

**\[java\]** [view plain][][copy][view plain][print][view plain][?][view plain]

1.  MainActivity.java

**\[java\]** [view plain][][copy][view plain][print][view plain][?][view plain]

1.  **package** com.aven.qqdemo; 
2.  
3.  **import** java.util.ArrayList; 
4.  **import** java.util.List; 
5.  
6.  **import** android.content.res.Resources; 
7.  **import** android.os.Bundle; 
8.  **import** android.os.Parcelable; 
9.  **import** android.support.v4.app.Fragment; 
10. **import** android.support.v4.app.FragmentActivity; 
11. **import** android.support.v4.app.FragmentManager; 
12. **import** android.support.v4.app.FragmentPagerAdapter; 
13. **import** android.support.v4.app.FragmentTransaction; 
14. **import** android.support.v4.view.ViewPager; 
15. **import** android.support.v4.view.ViewPager.OnPageChangeListener; 
16. **import** android.util.DisplayMetrics; 
17. **import** android.util.Log; 
18. **import** android.view.LayoutInflater; 
19. **import** android.view.View; 
20. **import** android.view.Window; 
21. **import** android.view.animation.Animation; 
22. **import** android.view.animation.TranslateAnimation; 
23. **import** android.widget.ImageView; 
24. **import** android.widget.TextView; 
25. 
26. **import** com.demo.R; 
27. 
28. 
29. **public****class** MainActivity **extends** FragmentActivity \{ 
30. **private****static****final** String TAG = "MainActivity"; 
31. **private** ViewPager mPager; 
32. **private** ArrayList<Fragment> fragmentsList; 
33. **private** ImageView ivBottomLine; 
34. **private** TextView tvTabActivity, tvTabGroups, tvTabFriends, tvTabChat; 
35. 
36. **private****int** currIndex = 0; 
37. **private****int** bottomLineWidth; 
38. **private****int** offset = 1000; 
39. **private****int** position\_one; 
40. **private****int** position\_two; 
41. **private****int** position\_three; 
42. **private** Resources resources; 
43. 
44. @Override
45. **public****void** onCreate(Bundle savedInstanceState) \{ 
46. **super**.onCreate(savedInstanceState); 
47.  requestWindowFeature(Window.FEATURE\_NO\_TITLE); 
48.  setContentView(R.layout.main); 
49.  resources = getResources(); 
50.  InitWidth(); 
51.  InitTextView(); 
52.  InitViewPager(); 
53.  \} 
54. 
55. **private****void** InitTextView() \{ 
56.  tvTabActivity = (TextView) findViewById(R.id.tv\_tab\_activity); 
57.  tvTabGroups = (TextView) findViewById(R.id.tv\_tab\_groups); 
58.  tvTabFriends = (TextView) findViewById(R.id.tv\_tab\_friends); 
59.  tvTabChat = (TextView) findViewById(R.id.tv\_tab\_chat); 
60. 
61.  tvTabActivity.setOnClickListener(**new** MyOnClickListener(0)); 
62.  tvTabGroups.setOnClickListener(**new** MyOnClickListener(1)); 
63.  tvTabFriends.setOnClickListener(**new** MyOnClickListener(2)); 
64.  tvTabChat.setOnClickListener(**new** MyOnClickListener(3)); 
65.  \} 
66. 
67. **private****void** InitViewPager() \{ 
68.  mPager = (ViewPager) findViewById(R.id.vPager); 
69.  fragmentsList = **new** ArrayList<Fragment>(); 
70.  LayoutInflater mInflater = getLayoutInflater(); 
71.  View activityView = mInflater.inflate(R.layout.lay1, **null**); 
72. 
73.  Fragment activityfragment = TestFragment.newInstance("Hello Activity."); 
74.  Fragment groupFragment = TestFragment.newInstance("Hello Group."); 
75.  Fragment friendsFragment=TestFragment.newInstance("Hello Friends."); 
76.  Fragment chatFragment=TestFragment.newInstance("Hello Chat."); 
77. 
78.  fragmentsList.add(activityfragment); 
79.  fragmentsList.add(groupFragment); 
80.  fragmentsList.add(friendsFragment); 
81.  fragmentsList.add(chatFragment); 
82. 
83.  mPager.setAdapter(**new** MyFragmentPagerAdapter(getSupportFragmentManager(), fragmentsList)); 
84.  mPager.setCurrentItem(0); 
85.  mPager.setOnPageChangeListener(**new** MyOnPageChangeListener()); 
86.  \} 
87. 
88. **private****void** InitWidth() \{ 
89.  ivBottomLine = (ImageView) findViewById(R.id.iv\_bottom\_line); 
90.  bottomLineWidth = ivBottomLine.getLayoutParams().width; 
91.  Log.d(TAG, "cursor imageview width=" \+ bottomLineWidth); 
92.  DisplayMetrics dm = **new** DisplayMetrics(); 
93.  getWindowManager().getDefaultDisplay().getMetrics(dm); 
94. **int** screenW = dm.widthPixels; 
95. // offset = (int) ((screenW / 4.0 - bottomLineWidth) / 2);
96. // Log.i("MainActivity", "offset=" + offset);
97. 
98.  position\_one = (**int**) (screenW / 4.0); 
99.  position\_two = position\_one \* 2; 
100.  position\_three = position\_one \* 3; 
101.  \} 
102. 
103. **public****class** MyOnClickListener **implements** View.OnClickListener \{ 
104. **private****int** index = 0; 
105. **public** MyOnClickListener(**int** i) \{ 
106.  index = i; 
107.  \} 
108. @Override
109. **public****void** onClick(View v) \{ 
110.  mPager.setCurrentItem(index); 
111.  \} 
112.  \}; 
113. 
114. **public****class** MyOnPageChangeListener **implements** OnPageChangeListener \{ 
115. 
116. @Override
117. **public****void** onPageSelected(**int** arg0) \{ 
118.  Animation animation = **null**; 
119. **switch** (arg0) \{ 
120. **case**0: 
121. **if** (currIndex == 1) \{ 
122.  animation = **new** TranslateAnimation(position\_one, 0, 0, 0); 
123.  tvTabGroups.setTextColor(resources.getColor(R.color.lightwhite)); 
124.  \} **else****if** (currIndex == 2) \{ 
125.  animation = **new** TranslateAnimation(position\_two, 0, 0, 0); 
126.  tvTabFriends.setTextColor(resources.getColor(R.color.lightwhite)); 
127.  \} **else****if** (currIndex == 3) \{ 
128.  animation = **new** TranslateAnimation(position\_three, 0, 0, 0); 
129.  tvTabChat.setTextColor(resources.getColor(R.color.lightwhite)); 
130.  \} 
131.  tvTabActivity.setTextColor(resources.getColor(R.color.white)); 
132. **break**; 
133. **case**1: 
134. **if** (currIndex == 0) \{ 
135.  animation = **new** TranslateAnimation(offset, position\_one, 0, 0); 
136.  tvTabActivity.setTextColor(resources.getColor(R.color.lightwhite)); 
137.  \} **else****if** (currIndex == 2) \{ 
138.  animation = **new** TranslateAnimation(position\_two, position\_one, 0, 0); 
139.  tvTabFriends.setTextColor(resources.getColor(R.color.lightwhite)); 
140.  \} **else****if** (currIndex == 3) \{ 
141.  animation = **new** TranslateAnimation(position\_three, position\_one, 0, 0); 
142.  tvTabChat.setTextColor(resources.getColor(R.color.lightwhite)); 
143.  \} 
144.  tvTabGroups.setTextColor(resources.getColor(R.color.white)); 
145. **break**; 
146. **case**2: 
147. **if** (currIndex == 0) \{ 
148.  animation = **new** TranslateAnimation(offset, position\_two, 0, 0); 
149.  tvTabActivity.setTextColor(resources.getColor(R.color.lightwhite)); 
150.  \} **else****if** (currIndex == 1) \{ 
151.  animation = **new** TranslateAnimation(position\_one, position\_two, 0, 0); 
152.  tvTabGroups.setTextColor(resources.getColor(R.color.lightwhite)); 
153.  \} **else****if** (currIndex == 3) \{ 
154.  animation = **new** TranslateAnimation(position\_three, position\_two, 0, 0); 
155.  tvTabChat.setTextColor(resources.getColor(R.color.lightwhite)); 
156.  \} 
157.  tvTabFriends.setTextColor(resources.getColor(R.color.white)); 
158. **break**; 
159. **case**3: 
160. **if** (currIndex == 0) \{ 
161.  animation = **new** TranslateAnimation(offset, position\_three, 0, 0); 
162.  tvTabActivity.setTextColor(resources.getColor(R.color.lightwhite)); 
163.  \} **else****if** (currIndex == 1) \{ 
164.  animation = **new** TranslateAnimation(position\_one, position\_three, 0, 0); 
165.  tvTabGroups.setTextColor(resources.getColor(R.color.lightwhite)); 
166.  \} **else****if** (currIndex == 2) \{ 
167.  animation = **new** TranslateAnimation(position\_two, position\_three, 0, 0); 
168.  tvTabFriends.setTextColor(resources.getColor(R.color.lightwhite)); 
169.  \} 
170.  tvTabChat.setTextColor(resources.getColor(R.color.white)); 
171. **break**; 
172.  \} 
173.  currIndex = arg0; 
174.  animation.setFillAfter(**true**); 
175.  animation.setDuration(300); 
176.  ivBottomLine.startAnimation(animation); 
177.  \} 
178. 
179. @Override
180. **public****void** onPageScrolled(**int** arg0, **float** arg1, **int** arg2) \{ 
181.  \} 
182. 
183. @Override
184. **public****void** onPageScrollStateChanged(**int** arg0) \{ 
185.  \} 
186.  \} 
187. \}

MyFragmentPagerAdapter.java

**\[java\]** [view plain][][copy][view plain][print][view plain][?][view plain]

1.  **package** com.aven.qqdemo; 
2.  
3.  **import** java.util.ArrayList; 
4.  
5.  **import** android.support.v4.app.Fragment; 
6.  **import** android.support.v4.app.FragmentManager; 
7.  **import** android.support.v4.app.FragmentPagerAdapter; 
8.  
9.  **public****class** MyFragmentPagerAdapter **extends** FragmentPagerAdapter \{ 
10. **private** ArrayList<Fragment> fragmentsList; 
11. 
12. **public** MyFragmentPagerAdapter(FragmentManager fm) \{ 
13. **super**(fm); 
14.  \} 
15. 
16. **public** MyFragmentPagerAdapter(FragmentManager fm, ArrayList<Fragment> fragments) \{ 
17. **super**(fm); 
18. **this**.fragmentsList = fragments; 
19.  \} 
20. 
21. @Override
22. **public****int** getCount() \{ 
23. **return** fragmentsList.size(); 
24.  \} 
25. 
26. @Override
27. **public** Fragment getItem(**int** arg0) \{ 
28. **return** fragmentsList.get(arg0); 
29.  \} 
30. 
31. @Override
32. **public****int** getItemPosition(Object object) \{ 
33. **return****super**.getItemPosition(object); 
34.  \} 
35. 
36. \}

TestFragment.java

**\[html\]** [view plain][][copy][view plain][print][view plain][?][view plain]

1.  package com.aven.qqdemo; 
2.  
3.  import com.demo.R; 
4.  
5.  import android.os.Bundle; 
6.  import android.support.v4.app.Fragment; 
7.  import android.util.Log; 
8.  import android.view.LayoutInflater; 
9.  import android.view.View; 
10. import android.view.ViewGroup; 
11. import android.widget.TextView; 
12. 
13. public class TestFragment extends Fragment \{ 
14.  private static final String TAG = "TestFragment"; 
15.  private String hello;// = "hello android"; 
16.  private String defaultHello = "default value"; 
17. 
18.  static TestFragment newInstance(String s) \{ 
19.  TestFragment newFragment = new TestFragment(); 
20.  Bundle bundle = new Bundle(); 
21.  bundle.putString("hello", s); 
22.  newFragment.setArguments(bundle); 
23.  return newFragment; 
24. 
25.  \} 
26. 
27.  @Override 
28.  public void onCreate(Bundle savedInstanceState) \{ 
29.  super.onCreate(savedInstanceState); 
30.  Log.d(TAG, "TestFragment-----onCreate"); 
31.  Bundle args = getArguments(); 
32. hello = args != null ? args.getString("hello") : defaultHello; 
33.  \} 
34. 
35.  @Override 
36.  public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) \{ 
37.  Log.d(TAG, "TestFragment-----onCreateView"); 
38.  View view = inflater.inflate(R.layout.lay1, container, false); 
39.  TextView viewhello = (TextView) view.findViewById(R.id.tv\_hello); 
40.  viewhello.setText(hello); 
41.  return view; 
42. 
43.  \} 
44. 
45.  @Override 
46.  public void onDestroy() \{ 
47.  super.onDestroy(); 
48.  Log.d(TAG, "TestFragment-----onDestroy"); 
49.  \} 
50. 
51. \}

转载于:https://my.oschina.net/u/1777508/blog/314524

[2019_Python_]: https://my.oschina.net/u/2663968/blog/3061697
[hot3.png]: /images/20220114/f3d338d1c12844fea912444f599de471.png
[17100524_51GG.jpg]: /images/20220114/7ebc4e3a553d4baea64cc1fb58d48105.png
[http_download.csdn.net_my_uploads]: http://download.csdn.net/my/uploads
[view plain]: http://blog.csdn.net/jansin_love/article/details/8964528#