GridView
使用方法。同ListView。用于显示列表视图,也是通过Adapter进行数据的适配。
android:horizontalSpacing="6dp"---横向间距6dp
android:numColumns="3"---指定列数：三列
通过setOnItemClickListener为其添加条目点击监听
ScrollView
用于嵌套在其他组件之上，使不能完全显示的组件滚动显示
内部只能嵌套一个组件，如果要嵌套多个，就用ViewGroup包裹。
HorizontalScrollView
使用方法同ScrollView，只是滚动方向变成了横向,内部也只能放置一个组件
Gallery:
横向滚动的用于展示图片的组件。
android:spacing="1dp" ---图片间距
通过Adapter设置要显示的数据
通过setOnItemClickListener为其添加条目点击监听
//滚动的时候不触发OnItemSelectedListener
gallery.setCallbackDuringFling(false); ------ 滚动状态下，不触发选中监听
gallery.setOnItemSelectedListener()-----------设置条目选中的监听
ImageSwitcher:
切换展示图片，继承于FrameLayout
通过setFactory的方法来添加内部的ImageView
1 switcher.setFactory(new ViewFactory() {
2 public View makeView() {
3 ImageView iv = new ImageView(MainActivity.this);
4 //设置ImageView的宽高
5 iv.setLayoutParams(new FrameLayout.LayoutParams(
6 LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
7 //设置图片的缩放规则
8 iv.setScaleType(ScaleType.CENTER_CROP);
9 return iv;
10 }
11 });
12 switcher.setInAnimation(ani_in);//添加图片切入时的动画效果
通过setonClickListener的方法为其添加点击监听
在代码中动态添加View组件：
首先获取到ViewGroup对象，然后实例化出需要添加的组件，并且设置其属性（宽高、边距等）通过viewgroup.addView(view);
在代码中动态删除View组件：
viewgroup.removeAllViews();
案例代码:
1 public class MainActivity extends Activity {
2 int[] images = new int[] { R.drawable.aa, R.drawable.bb, R.drawable.cc,
3 R.drawable.dd, R.drawable.ee, R.drawable.ff, R.drawable.gg,
4 R.drawable.aa, R.drawable.bb, R.drawable.cc, R.drawable.dd,
5 R.drawable.ee, R.drawable.ff, R.drawable.gg, R.drawable.aa,
6 R.drawable.bb, R.drawable.cc, R.drawable.dd, R.drawable.ee };
7 private LinearLayout auto;
8
9 @Override
10 protected void onCreate(Bundle savedInstanceState) {
11 super.onCreate(savedInstanceState);
12 setContentView(R.layout.activity_main);
13 RadioGroup rb = (RadioGroup) this.findViewById(R.id.rg);
14 auto = (LinearLayout) this.findViewById(R.id.auto_view);
15 rb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
16
17 @Override
18 public void onCheckedChanged(RadioGroup group, int checkedId) {
19 // TODO Auto-generated method stub
20 switch (checkedId) {
21 case R.id.bt1:
22 initGridView();
23 break;
24 case R.id.bt2:
25 initScrollView();
26 break;
27 case R.id.bt3:
28 initGallery();
29 break;
30 case R.id.bt4:
31 initImageSwitcher();
32 break;
33 }
34 }
35 });
36
37 // initGridView();
38 // initScrollView();
39 // initGallery();
40 // initImageSwitcher();
41
42 }
43
44 private void initImageSwitcher() {
45 // TODO Auto-generated method stub
46 View v = View.inflate(this, R.layout.switcher_layout, null);
47 final ImageSwitcher switcher = (ImageSwitcher) v
48 .findViewById(R.id.switcher);
49 switcher.setFactory(new ViewFactory() {
50
51 @Override
52 public View makeView() {
53 // TODO Auto-generated method stub
54 ImageView iv = new ImageView(MainActivity.this);
55 iv.setLayoutParams(new FrameLayout.LayoutParams(
56 LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
57
58 iv.setScaleType(ScaleType.CENTER_CROP);
59 return iv;
60 }
61 });
62 Animation ani_in = AnimationUtils.loadAnimation(this,
63 android.R.anim.fade_in);
64 switcher.setInAnimation(ani_in);
65 Animation ani_out = AnimationUtils.loadAnimation(this,
66 android.R.anim.fade_out);
67 switcher.setOutAnimation(ani_out);
68
69 switcher.setImageResource(images[0]);
70 switcher.setOnClickListener(new OnClickListener() {
71 int i = 0;
72
73 @Override
74 public void onClick(View v) {
75 switcher.setImageResource(images[++i % images.length]);
76 }
77 });
78 auto.removeAllViews();
79 auto.addView(v);
80 }
81
82 private void initGallery() {
83 // TODO Auto-generated method stub
84 View v = View.inflate(this, R.layout.gallery_layout, null);
85 Gallery gallery = (Gallery) v.findViewById(R.id.gallery);
86
87 gallery.setAdapter(getAdapter());
88 //滚动的时候不触发OnItemSelectedListener
89 gallery.setCallbackDuringFling(false);
90 gallery.setOnItemSelectedListener(new OnItemSelectedListener() {
91
92 @Override
93 public void onItemSelected(AdapterView<?> parent, View view,
94 int position, long id) {
95 Log.w("positon", " " + position);
96 }
97
98 @Override
99 public void onNothingSelected(AdapterView<?> parent) {
100
101 }
102 });
103 auto.removeAllViews();
104 auto.addView(v);
105 }
106
107 private void initScrollView() {
108 // setContentView(R.layout.scorll_layout);
109 View v = (LinearLayout) View
110 .inflate(this, R.layout.scorll_layout, null);
111
112 LinearLayout linear_1 = (LinearLayout) v
113 .findViewById(R.id.scroll_linear);
114 // LinearLayout linear_1 = (LinearLayout) this
115 // .findViewById(R.id.scroll_linear);
116 for (int i = 0; i < images.length; i++) {
117 LinearLayout ll = (LinearLayout) View.inflate(this, R.layout.image,
118 null);
119 ImageView iv1 = (ImageView) ll.findViewById(R.id.iviv1);
120 iv1.setImageResource(images[i]);
121
122 ImageView iv2 = (ImageView) ll.findViewById(R.id.iviv2);
123 if (++i < images.length) {
124
125 iv2.setImageResource(images[i]);
126 }
127 linear_1.addView(ll);
128 }
129 auto.removeAllViews();
130 auto.addView(v);
131 }
132
133 private void initGridView() {
134 // TODO Auto-generated method stub
135 // setContentView(R.layout.scorll_layout);
136 View v = View.inflate(this, R.layout.gridview_layout, null);
137 GridView gv = (GridView) v.findViewById(R.id.grid_view);
138 gv.setAdapter(getAdapter());
139 gv.setOnItemClickListener(new OnItemClickListener() {
140 @Override
141 public void onItemClick(AdapterView<?> parent, View view,
142 int position, long id) {
143 // TODO Auto-generated method stub
144 Toast.makeText(MainActivity.this, "positon " + position, 1)
145 .show();
146 }
147 });
148 auto.removeAllViews();
149 auto.addView(v);
150 }
151
152 public SimpleAdapter getAdapter() {
153 List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
154
155 String[] names = new String[] { "aa", "bb", "cc", "dd", "ee", "ff",
156 "gg", "aa", "bb", "cc", "dd", "ee", "ff", "gg", "aa", "bb",
157 "cc", "dd", "ee" };
158 Map<String, Object> map = null;
159 for (int i = 0; i < names.length; i++) {
160 map = new HashMap<String, Object>();
161 map.put("images", images[i]);
162 map.put("names", names[i]);
163 list.add(map);
164 }
165
166 SimpleAdapter adapter = new SimpleAdapter(this, list,
167 R.layout.gridview_item, new String[] { "images", "names" },
168 new int[] { R.id.image_view, R.id.textview });
169
170 return adapter;
171
172 }
173 }
时间： 2024-11-03 22:23:50