Android 实现多图分享到微信朋友圈

1.初始的步骤可以先参考：

Android 实现微信分享好友和朋友圈

http://blog.csdn.net/unique_even/article/details/71717368

2.刚开始我采用微信开放平台给出的接口来分享图片，但是只能分享一张，之后各种搜索，找到了新的思路（可以参考下：http://blog.csdn.net/qq_27030835/article/details/50828352），是先把图片缓存下来，之后在去分享。

1.ShareActivity 类

public class ShareActivity  extends Activity{
private Button mButtonGetValue; // 获取数据按钮
private GridView mListView;// 数据展示列表
private CheckboxAdapter listItemAdapter; // ListView数据展示适配器
private ArrayList<HashMap<String, Object>> listData;// ListView展示数据源
private WeChatShareUtil weChatShareUtil;
Context context;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.z_shareactivity);
context = this;
initView();
registerListener();
listData = new ArrayList<HashMap<String, Object>>();
initListViewData(listData);
loadData();
weChatShareUtil = WeChatShareUtil.getInstance(this);

}

/**
* 初始化布局
*/
private void initView() {
mButtonGetValue = (Button) findViewById(R.id.get_value);
mListView = (GridView) findViewById(R.id.list);
}

private void registerListener() {
mButtonGetValue.setOnClickListener((View.OnClickListener) new OnClickListenerImpl());
}

/**
* 加载数据
*/
private void loadData() {
listItemAdapter = new CheckboxAdapter(this, listData);
mListView.setAdapter(listItemAdapter);
}

/**
* 初始化ListView数据源
*
* @param listData
*/
private void initListViewData(ArrayList<HashMap<String, Object>> listData) {
if (listData == null)
listData = new ArrayList<HashMap<String, Object>>();
for (int i = 0; i < 12; i++) {
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("friend_image", "http://imgsrc.baidu.com/imgad/pic/item/b58f8c5494eef01f4b2237c5eafe9925bc317dff.jpg");
map.put("selected", false);
// 向容器添加数据
listData.add(map);
}
}

private class OnClickListenerImpl implements View.OnClickListener {

@Override
public void onClick(View v) {
new Thread(saveFileRunnable).start();
}
}

private Runnable saveFileRunnable = new Runnable(){
@Override
public void run() {
try {
List<HashMap<String, Object> >sList = new ArrayList<HashMap<String, Object>>();
HashMap<String, Object>  s = new HashMap<String, Object>();
int IMAGE_NAME = 0;
for(int i=0;i<listItemAdapter.getNumdata().size();i++){
IMAGE_NAME++;
String imageFileName = Integer.toString(IMAGE_NAME) + ".jpg";
s = listItemAdapter.getState().get(listItemAdapter.getNumdata().get(i).get("position"));
SavePhoto.downloadLyWithName((String)s.get("friend_image"),imageFileName, "phone", context);
}
// 遍历 SD 卡下 .png 文件通过微信分享
File file = new File(Environment.getExternalStorageDirectory() + "/BangMai/images/" + "phone");
File[] files = file.listFiles(new FileFilter() {
@Override
public boolean accept(File pathname) {
if (pathname.getName().endsWith(".jpg")) {
return true;
}
return false;
}
});

Intent intent = new Intent();
ComponentName comp = new ComponentName("com.tencent.mm", "com.tencent.mm.ui.tools.ShareToTimeLineUI");
intent.setComponent(comp);
intent.setAction(Intent.ACTION_SEND_MULTIPLE);
intent.setType("image/*");
ArrayList<Uri> imageUris = new ArrayList<Uri>();
for (File f : files) {
imageUris.add(Uri.fromFile(f));
}
intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, imageUris);
intent.putExtra("Kdescription", "测试");  // 这里可要可不要，这句话的意思是直接会显示在发表时候的文字
startActivity(intent);
} catch (Exception e) {
e.printStackTrace();
}
}
};
}

CheckboxAdapter 类

public class CheckboxAdapter extends BaseAdapter{
private Context context;
private ArrayList<HashMap<String, Object>> listData;

public ArrayList<HashMap<String, Object>> getNumdata() {
return numdata;
}

public void setNumdata(ArrayList<HashMap<String, Object>> numdata) {
this.numdata = numdata;
}

ArrayList<HashMap<String, Object>> numdata = new ArrayList<>();
HashMap<String, Object>  num = new HashMap();

public HashMap<Integer, HashMap<String, Object>> getState() {
return state;
}
//
public void setState(HashMap<Integer, HashMap<String, Object>> state) {
this.state = state;
}

//checkbox选中的数据
HashMap<Integer, HashMap<String, Object>> state = new HashMap<Integer, HashMap<String, Object>>();

// 构造方法初始化数据
public CheckboxAdapter(Context context, ArrayList<HashMap<String, Object>> listData) {
this.context = context;
this.listData = listData;
}

@Override
public int getCount() {
return (listData != null && !listData.isEmpty())?listData.size():0;
}

@Override
public Object getItem(int position) {
return listData.get(position);
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {

LayoutInflater mInflater = LayoutInflater.from(context);
convertView = mInflater.inflate(R.layout.z_item_list, null);
ImageView image = (ImageView) convertView.findViewById(R.id.friend_image);
final HashMap<String, Object> viewData = listData.get(position);
ImageLoaders.display(context, image, (String) viewData.get("friend_image"), R.drawable.add_nor);
CheckBox check = (CheckBox) convertView.findViewById(R.id.selected);
check.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
state.put(position, viewData);
num.put("position",position);
numdata.add(num);

} else {
state.remove(position);
num.remove(position);

}
}
});
check.setChecked((state.get(position) == null ? false : true));

return convertView;
}
}

SavePhoto类（保存图片的）

public class SavePhoto {

//保存带名称的图片
public static Boolean downloadLyWithName(String url, String imgName, String fileName, Context context) throws Exception {
Bitmap bitmap = null;
byte [] data = getImage(url);
if(data!=null){
bitmap = BitmapFactory.decodeByteArray(data,0,data.length);
saveImgWithName(bitmap,imgName,fileName,context);
return true;
}else {
return  false;

}

}

public static byte[] getImage(String path) throws Exception {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5*1000);
conn.setRequestMethod("GET");
InputStream inStream = conn.getInputStream();
if(conn.getResponseCode()==HttpURLConnection.HTTP_OK){
return readStream(inStream);
}
return null;

}

public static byte[] readStream(InputStream inStream) throws Exception{
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while( (len=inStream.read(buffer)) != -1){
outStream.write(buffer, 0, len);
}
outStream.close();
inStream.close();
return outStream.toByteArray();
}

//保存图片带名称
private static void saveImgWithName(Bitmap bitmap, String imgName, String fileName, Context context) {
if (bitmap != null) {
File appDir = new File(Environment.getExternalStorageDirectory() + "/BangMai/");
if (!appDir.exists()) {
appDir.mkdirs();
}
if (fileName != null) {
appDir = new File(Environment.getExternalStorageDirectory() + "/BangMai/images/" + fileName);
if (!appDir.exists()) {
appDir.mkdirs();
}
}
File file = null;
file = new File(appDir, imgName);
try {
FileOutputStream fos = new FileOutputStream(file);
if (null != fos) {
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}

z_item_list 布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="4dip"
android:paddingRight="12dip" >

<ImageView
android:id="@+id/friend_image"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:paddingLeft="2dip"
android:paddingTop="6dip" />

<CheckBox
android:id="@+id/selected"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginLeft="36dip"
android:focusable="false" />

</RelativeLayout>

z_shareactivity 布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<Button
android:id="@+id/get_value"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="微信分享" />

<GridView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:numColumns="3"
/>

</LinearLayout>