万能适配器
base-adapter
Android 万能的Adapter for ListView,GridView等，支持多种Item类型的情况。
可以直接导入项目参考，在Android Studio中，使用Import Module进行导入，如下图：
单种类型Item
listView.setAdapter(new CommonAdapter<Bean>(getActivity(), mDatas,
R.layout.item_single_listview)
{
@Override
public void convert(final ViewHolder holder, final Bean bean)
{
holder.setText(R.id.id_title, bean.getTitle())
.setText(R.id.id_desc, bean.getDesc())
.setText(R.id.id_time, bean.getTime())
.setText(R.id.id_phone, bean.getPhone());
holder.setOnClickListener(R.id.id_title, new View.OnClickListener()
{
@Override
public void onClick(View view)
{
Toast.makeText(getActivity(), bean.getTitle(), Toast.LENGTH_SHORT).show();
}
});
}
});只需要简单的将Adapter继承CommonAdapter，复写convert方法即可。省去了自己编写ViewHolder等大量的重复的代码。
- 可以通过holder.getView(id)拿到任何控件。
- ViewHolder中封装了大量的常用的方法，比如holder.setText(id,text)，holder.setOnClickListener(id,listener)等，可以支持使用。
效果图：
多种类型的Item
package com.zhy.quickdev.adapter.sample.adapter;
import android.content.Context;
import com.zhy.quickdev.adapter.MultiItemCommonAdapter;
import com.zhy.quickdev.adapter.MultiItemTypeSupport;
import com.zhy.quickdev.adapter.R;
import com.zhy.quickdev.adapter.ViewHolder;
import com.zhy.quickdev.adapter.sample.bean.ChatMessage;
import java.util.List;
/**
* Created by zhy on 15/9/4.
*/
public class ChatAdapter extends MultiItemCommonAdapter<ChatMessage>
{
public ChatAdapter(Context context, List<ChatMessage> datas)
{
super(context, datas, new MultiItemTypeSupport<ChatMessage>()
{
@Override
public int getLayoutId(int position, ChatMessage msg)
{
if (msg.isComMeg())
{
return R.layout.main_chat_from_msg;
}
return R.layout.main_chat_send_msg;
}
@Override
public int getViewTypeCount()
{
return 2;
}
@Override
public int getItemViewType(int postion, ChatMessage msg)
{
if (msg.isComMeg())
{
return ChatMessage.RECIEVE_MSG;
}
return ChatMessage.SEND_MSG;
}
});
}
@Override
public void convert(ViewHolder holder, ChatMessage chatMessage)
{
switch (holder.getLayoutId())
{
case R.layout.main_chat_from_msg:
holder.setText(R.id.chat_from_content, chatMessage.getContent());
holder.setText(R.id.chat_from_name, chatMessage.getName());
holder.setImageResource(R.id.chat_from_icon, chatMessage.getIcon());
break;
case R.layout.main_chat_send_msg:
holder.setText(R.id.chat_send_content, chatMessage.getContent());
holder.setText(R.id.chat_send_name, chatMessage.getName());
holder.setImageResource(R.id.chat_send_icon, chatMessage.getIcon());
break;
}
}
}需要在构造中传入MultiItemTypeSupport对象，然后在convert方法中，根据holder.getLayoutId()，根据不同的layoutId进行相应的控件初始化即可。
效果图：
1 package com.example.adapter;
2
3 import java.util.List;
4
5 import android.content.Context;
6 import android.view.LayoutInflater;
7 import android.view.View;
8 import android.view.ViewGroup;
9 import android.widget.BaseAdapter;
10
11 public abstract class CommonAdapter<T> extends BaseAdapter {
12 protected Context mContext;
13 protected List<T> mDatas;
14 protected LayoutInflater mInflater;
15 private int layoutId;
16
17 public CommonAdapter(Context context, List<T> datas, int layoutId) {
18 this.mContext = context;
19 mInflater = LayoutInflater.from(context);
20 this.mDatas = datas;
21 this.layoutId = layoutId;
22 }
23
24 @Override
25 public int getCount() {
26 return mDatas.size();
27 }
28
29 @Override
30 public T getItem(int position) {
31 return mDatas.get(position);
32 }
33
34 @Override
35 public long getItemId(int position) {
36 return position;
37 }
38
39 @Override
40 public View getView(int position, View convertView, ViewGroup parent) {
41 ViewHolder holder = ViewHolder.get(mContext, convertView, parent,
42 layoutId, position);
43 convert(holder, getItem(position));
44 return holder.getConvertView();
45 }
46
47 public abstract void convert(ViewHolder holder, T t);
48
49 } 1 package com.example.adapter;
2
3 import android.content.Context;
4 import android.view.View;
5 import android.view.ViewGroup;
6
7 import java.util.List;
8
9 public abstract class MultiItemCommonAdapter<T> extends CommonAdapter<T> {
10
11 protected MultiItemTypeSupport<T> mMultiItemTypeSupport;
12
13 public MultiItemCommonAdapter(Context context, List<T> datas,
14 MultiItemTypeSupport<T> multiItemTypeSupport) {
15 super(context, datas, -1);
16 mMultiItemTypeSupport = multiItemTypeSupport;
17 }
18
19 @Override
20 public int getViewTypeCount() {
21 if (mMultiItemTypeSupport != null)
22 return mMultiItemTypeSupport.getViewTypeCount();
23 return super.getViewTypeCount();
24 }
25
26 @Override
27 public int getItemViewType(int position) {
28 if (mMultiItemTypeSupport != null)
29 return mMultiItemTypeSupport.getItemViewType(position,
30 mDatas.get(position));
31 return super.getItemViewType(position);
32
33 }
34
35 @Override
36 public View getView(int position, View convertView, ViewGroup parent) {
37 if (mMultiItemTypeSupport == null)
38 return super.getView(position, convertView, parent);
39
40 int layoutId = mMultiItemTypeSupport.getLayoutId(position,
41 getItem(position));
42 ViewHolder viewHolder = ViewHolder.get(mContext, convertView, parent,
43 layoutId, position);
44 convert(viewHolder, getItem(position));
45 return viewHolder.getConvertView();
46 }
47
48 }1 package com.example.adapter;
2
3 public interface MultiItemTypeSupport<T> {
4 int getLayoutId(int position, T t);
5
6 int getViewTypeCount();
7
8 int getItemViewType(int postion, T t);
9 } 1 package com.example.adapter;
2
3 import android.annotation.SuppressLint;
4 import android.content.Context;
5 import android.graphics.Bitmap;
6 import android.graphics.Paint;
7 import android.graphics.Typeface;
8 import android.graphics.drawable.Drawable;
9 import android.os.Build;
10 import android.text.util.Linkify;
11 import android.util.SparseArray;
12 import android.view.LayoutInflater;
13 import android.view.View;
14 import android.view.ViewGroup;
15 import android.view.animation.AlphaAnimation;
16 import android.widget.Checkable;
17 import android.widget.ImageView;
18 import android.widget.ProgressBar;
19 import android.widget.RatingBar;
20 import android.widget.TextView;
21
22 public class ViewHolder {
23 private SparseArray<View> mViews;
24 private int mPosition;
25 private View mConvertView;
26 private Context mContext;
27 private int mLayoutId;
28
29 public ViewHolder(Context context, ViewGroup parent, int layoutId,
30 int position) {
31 mContext = context;
32 mLayoutId = layoutId;
33 this.mPosition = position;
34 this.mViews = new SparseArray<View>();
35 mConvertView = LayoutInflater.from(context).inflate(layoutId, parent,
36 false);
37 mConvertView.setTag(this);
38 }
39
40 public static ViewHolder get(Context context, View convertView,
41 ViewGroup parent, int layoutId, int position) {
42 if (convertView == null) {
43 return new ViewHolder(context, parent, layoutId, position);
44 } else {
45 ViewHolder holder = (ViewHolder) convertView.getTag();
46 holder.mPosition = position;
47 return holder;
48 }
49 }
50
51 public int getPosition() {
52 return mPosition;
53 }
54
55 public int getLayoutId() {
56 return mLayoutId;
57 }
58
59 /**
60 * 通过viewId获取控件
61 *
62 * @param viewId
63 * @return
64 */
65 public <T extends View> T getView(int viewId) {
66 View view = mViews.get(viewId);
67 if (view == null) {
68 view = mConvertView.findViewById(viewId);
69 mViews.put(viewId, view);
70 }
71 return (T) view;
72 }
73
74 public View getConvertView() {
75 return mConvertView;
76 }
77
78 /**
79 * 设置TextView的值
80 *
81 * @param viewId
82 * @param text
83 * @return
84 */
85 public ViewHolder setText(int viewId, String text) {
86 TextView tv = getView(viewId);
87 tv.setText(text);
88 return this;
89 }
90
91 public ViewHolder setImageResource(int viewId, int resId) {
92 ImageView view = getView(viewId);
93 view.setImageResource(resId);
94 return this;
95 }
96
97 public ViewHolder setImageBitmap(int viewId, Bitmap bitmap) {
98 ImageView view = getView(viewId);
99 view.setImageBitmap(bitmap);
100 return this;
101 }
102
103 public ViewHolder setImageDrawable(int viewId, Drawable drawable) {
104 ImageView view = getView(viewId);
105 view.setImageDrawable(drawable);
106 return this;
107 }
108
109 public ViewHolder setBackgroundColor(int viewId, int color) {
110 View view = getView(viewId);
111 view.setBackgroundColor(color);
112 return this;
113 }
114
115 public ViewHolder setBackgroundRes(int viewId, int backgroundRes) {
116 View view = getView(viewId);
117 view.setBackgroundResource(backgroundRes);
118 return this;
119 }
120
121 public ViewHolder setTextColor(int viewId, int textColor) {
122 TextView view = getView(viewId);
123 view.setTextColor(textColor);
124 return this;
125 }
126
127 public ViewHolder setTextColorRes(int viewId, int textColorRes) {
128 TextView view = getView(viewId);
129 view.setTextColor(mContext.getResources().getColor(textColorRes));
130 return this;
131 }
132
133 @SuppressLint("NewApi")
134 public ViewHolder setAlpha(int viewId, float value) {
135 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
136 getView(viewId).setAlpha(value);
137 } else {
138 // Pre-honeycomb hack to set Alpha value
139 AlphaAnimation alpha = new AlphaAnimation(value, value);
140 alpha.setDuration(0);
141 alpha.setFillAfter(true);
142 getView(viewId).startAnimation(alpha);
143 }
144 return this;
145 }
146
147 public ViewHolder setVisible(int viewId, boolean visible) {
148 View view = getView(viewId);
149 view.setVisibility(visible ? View.VISIBLE : View.GONE);
150 return this;
151 }
152
153 public ViewHolder linkify(int viewId) {
154 TextView view = getView(viewId);
155 Linkify.addLinks(view, Linkify.ALL);
156 return this;
157 }
158
159 public ViewHolder setTypeface(Typeface typeface, int... viewIds) {
160 for (int viewId : viewIds) {
161 TextView view = getView(viewId);
162 view.setTypeface(typeface);
163 view.setPaintFlags(view.getPaintFlags() | Paint.SUBPIXEL_TEXT_FLAG);
164 }
165 return this;
166 }
167
168 public ViewHolder setProgress(int viewId, int progress) {
169 ProgressBar view = getView(viewId);
170 view.setProgress(progress);
171 return this;
172 }
173
174 public ViewHolder setProgress(int viewId, int progress, int max) {
175 ProgressBar view = getView(viewId);
176 view.setMax(max);
177 view.setProgress(progress);
178 return this;
179 }
180
181 public ViewHolder setMax(int viewId, int max) {
182 ProgressBar view = getView(viewId);
183 view.setMax(max);
184 return this;
185 }
186
187 public ViewHolder setRating(int viewId, float rating) {
188 RatingBar view = getView(viewId);
189 view.setRating(rating);
190 return this;
191 }
192
193 public ViewHolder setRating(int viewId, float rating, int max) {
194 RatingBar view = getView(viewId);
195 view.setMax(max);
196 view.setRating(rating);
197 return this;
198 }
199
200 public ViewHolder setTag(int viewId, Object tag) {
201 View view = getView(viewId);
202 view.setTag(tag);
203 return this;
204 }
205
206 public ViewHolder setTag(int viewId, int key, Object tag) {
207 View view = getView(viewId);
208 view.setTag(key, tag);
209 return this;
210 }
211
212 public ViewHolder setChecked(int viewId, boolean checked) {
213 Checkable view = (Checkable) getView(viewId);
214 view.setChecked(checked);
215 return this;
216 }
217
218 /**
219 * 关于事件的
220 */
221 public ViewHolder setOnClickListener(int viewId,
222 View.OnClickListener listener) {
223 View view = getView(viewId);
224 view.setOnClickListener(listener);
225 return this;
226 }
227
228 public ViewHolder setOnTouchListener(int viewId,
229 View.OnTouchListener listener) {
230 View view = getView(viewId);
231 view.setOnTouchListener(listener);
232 return this;
233 }
234
235 public ViewHolder setOnLongClickListener(int viewId,
236 View.OnLongClickListener listener) {
237 View view = getView(viewId);
238 view.setOnLongClickListener(listener);
239 return this;
240 }
241
242 }本文参与 腾讯云自媒体分享计划，分享自作者个人站点/博客。
原始发表：2015-09-28 ，如有侵权请联系 cloudcommunity@tencent.com 删除
评论
登录后参与评论
推荐阅读
目录