1..先去微信开放平台注册账号，然后创建应用，签名工具下载 ， 创建成功得到appid和secret。
- 导入方式 Android接入指南
3. 注册到微信（可以在Application 、页面的 onCreate.... ）
IWXAPI api = WXAPIFactory.createWXAPI(this, APP_ID, true);
api.registerApp(APP_ID)
4.WXEntryActivity是微信回调的类
public class WXEntryActivity extends BaseActivity implements IWXAPIEventHandler {
private Context context = WXEntryActivity.this;
private void handleIntent(Intent paramIntent) {
BaseApplication.api.handleIntent(paramIntent, this);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
handleIntent(getIntent());
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
setIntent(intent);
handleIntent(intent);
}
// 微信发送请求到第三方应用时，会回调到该方法
@Override
public void onReq(BaseReq req) {
finish();
}
// 第三方应用发送到微信的请求处理后的响应结果，会回调到该方法
@Override
public void onResp(BaseResp resp) {
switch (resp.errCode) {
case BaseResp.ErrCode.ERR_OK:
if (ConstantsAPI.COMMAND_SENDMESSAGE_TO_WX == resp.getType()) {//分享
Toast.makeText(context, "分享成功", Toast.LENGTH_LONG).show();
finish();
break;
}
break;
case BaseResp.ErrCode.ERR_USER_CANCEL:
Toast.makeText(this, " 取消 ", Toast.LENGTH_LONG).show();
finish();
break;
case BaseResp.ErrCode.ERR_AUTH_DENIED:
Toast.makeText(this, " 拒绝 ", Toast.LENGTH_LONG).show();
finish();
break;
default:
break;
}
}
}
5.分享代码 以下5种类型
分享类型：(文本、图片、音乐、视频、网页)
1).文本分享代码：
WXTextObject textObj = new WXTextObject();
textObj.text = text;
// 用WXTextObject对象初始化一个WXMediaMessage对象
WXMediaMessage msg = new WXMediaMessage();
msg.mediaObject = textObj;
// 发送文本类型的消息时，title字段不起作用
msg.title = "Will be ignored";
msg.description = text;
// 构造一个Req
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.transaction = buildTransaction("text"); // transaction字段用于唯一标识一个请求
req.message = msg;
req.scene = SendMessageToWX.Req.WXSceneSession; //设置发送给朋友
// req.scene = SendMessageToWX.Req.WXSceneTimeline; //设置发送到朋友圈
// 调用api接口发送数据到微信
api.sendReq(req);
2).图片分享代码：（包含 本地图片，SD卡图片，网络图片）
分享多张图片：https://www.jianshu.com/p/ce9f286bdd68
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.img);
WXImageObject imgObj = new WXImageObject(bmp);
WXMediaMessage msg = new WXMediaMessage();
msg.mediaObject = imgObj;
Bitmap thumbBmp = Bitmap.createScaledBitmap(bmp, THUMB_SIZE, THUMB_SIZE, true);
bmp.recycle();
msg.thumbData = Util.bmpToByteArray(thumbBmp, true); // 设置所图；
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.transaction = buildTransaction("img");
req.message = msg;
req.scene = SendMessageToWX.Req.WXSceneSession; //设置发送给朋友
// req.scene = SendMessageToWX.Req.WXSceneTimeline; //设置发送到朋友圈
api.sendReq(req);
3).音乐分享代码
WXMusicObject music = new WXMusicObject();
music.musicUrl = "http://staff2.ustc.edu.cn/~wdw/softdown/index.asp/0042515_05.ANDY.mp3";
WXMediaMessage msg = new WXMediaMessage();
msg.mediaObject = music;
msg.title = "标题";
msg.description = "描述信息";
Bitmap thumb = BitmapFactory.decodeResource(getResources(), R.drawable.photo);
msg.thumbData = Util.bmpToByteArray(thumb, true);
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.transaction = buildTransaction("music");
req.message = msg;
req.scene = SendMessageToWX.Req.WXSceneSession; //设置发送给朋友
// req.scene = SendMessageToWX.Req.WXSceneTimeline; //设置发送到朋友圈
api.sendReq(req);
4).视频分享代码
WXVideoObject video = new WXVideoObject();
video.videoUrl = "url....mp4";//mp4视频路径
WXMediaMessage msg = new WXMediaMessage(video);
msg.title = "标题";
msg.description = "描述信息";
Bitmap thumb = BitmapFactory.decodeResource(getResources(), R.drawable.photo);
msg.thumbData = Util.bmpToByteArray(thumb, true);
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.transaction = buildTransaction("video");
req.message = msg;
req.scene = SendMessageToWX.Req.WXSceneSession; //设置发送给朋友
// req.scene = SendMessageToWX.Req.WXSceneTimeline; //设置发送到朋友圈
api.sendReq(req);
5).网页分享代码
WXWebpageObject webpage = new WXWebpageObject();
webpage.webpageUrl = "http://www.baidu.com";
WXMediaMessage msg = new WXMediaMessage(webpage);
msg.title = "标题";
msg.description = "描述信息";
Bitmap thumb = BitmapFactory.decodeResource(getResources(), R.drawable.photo);
msg.thumbData = Util.bmpToByteArray(thumb, true);
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.transaction = buildTransaction("webpage");
req.message = msg;
req.scene = SendMessageToWX.Req.WXSceneSession; //设置发送给朋友
// req.scene = SendMessageToWX.Req.WXSceneTimeline; //设置发送到朋友圈
api.sendReq(req);
补充： buildTransaction方法 和 Util代码
- buildTransaction方法
private String buildTransaction(final String type) {
return (type == null) ? String.valueOf(System.currentTimeMillis())
: type + System.currentTimeMillis();
}
2.Util代码
public class Util {
private static final String TAG = "SDK_Sample.Util";
public static byte[] bmpToByteArray(final Bitmap bmp, final boolean needRecycle) {
ByteArrayOutputStream output = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, output);
if (needRecycle) {
bmp.recycle();
}
byte[] result = output.toByteArray();
try {
output.close();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
public static byte[] getHtmlByteArray(final String url) {
URL htmlUrl = null;
InputStream inStream = null;
try {
htmlUrl = new URL(url);
URLConnection connection = htmlUrl.openConnection();
HttpURLConnection httpConnection = (HttpURLConnection)connection;
int responseCode = httpConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK){
inStream = httpConnection.getInputStream();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
byte[] data = inputStreamToByte(inStream);
return data;
}
public static byte[] inputStreamToByte(InputStream is) {
try{
ByteArrayOutputStream bytestream = new ByteArrayOutputStream();
int ch;
while ((ch = is.read()) != -1) {
bytestream.write(ch);
}
byte imgdata[] = bytestream.toByteArray();
bytestream.close();
return imgdata;
}catch(Exception e){
e.printStackTrace();
}
return null;
}
public static byte[] readFromFile(String fileName, int offset, int len) {
if (fileName == null) {
return null;
}
File file = new File(fileName);
if (!file.exists()) {
Log.i(TAG, "readFromFile: file not found");
return null;
}
if (len == -1) {
len = (int) file.length();
}
Log.d(TAG, "readFromFile : offset = " + offset + " len = " + len + " offset + len = " + (offset + len));
if(offset <0){
Log.e(TAG, "readFromFile invalid offset:" + offset);
return null;
}
if(len <=0 ){
Log.e(TAG, "readFromFile invalid len:" + len);
return null;
}
if(offset + len > (int) file.length()){
Log.e(TAG, "readFromFile invalid file len:" + file.length());
return null;
}
byte[] b = null;
try {
RandomAccessFile in = new RandomAccessFile(fileName, "r");
b = new byte[len]; // 创建合适文件大小的数组
in.seek(offset);
in.readFully(b);
in.close();
} catch (Exception e) {
Log.e(TAG, "readFromFile : errMsg = " + e.getMessage());
e.printStackTrace();
}
return b;
}
private static final int MAX_DECODE_PICTURE_SIZE = 1920 * 1440;
public static Bitmap extractThumbNail(final String path, final int height, final int width, final boolean crop) {
Assert.assertTrue(path != null && !path.equals("") && height > 0 && width > 0);
BitmapFactory.Options options = new BitmapFactory.Options();
try {
options.inJustDecodeBounds = true;
Bitmap tmp = BitmapFactory.decodeFile(path, options);
if (tmp != null) {
tmp.recycle();
tmp = null;
}
Log.d(TAG, "extractThumbNail: round=" + width + "x" + height + ", crop=" + crop);
final double beY = options.outHeight * 1.0 / height;
final double beX = options.outWidth * 1.0 / width;
Log.d(TAG, "extractThumbNail: extract beX = " + beX + ", beY = " + beY);
options.inSampleSize = (int) (crop ? (beY > beX ? beX : beY) : (beY < beX ? beX : beY));
if (options.inSampleSize <= 1) {
options.inSampleSize = 1;
}
// NOTE: out of memory error
while (options.outHeight * options.outWidth / options.inSampleSize > MAX_DECODE_PICTURE_SIZE) {
options.inSampleSize++;
}
int newHeight = height;
int newWidth = width;
if (crop) {
if (beY > beX) {
newHeight = (int) (newWidth * 1.0 * options.outHeight / options.outWidth);
} else {
newWidth = (int) (newHeight * 1.0 * options.outWidth / options.outHeight);
}
} else {
if (beY < beX) {
newHeight = (int) (newWidth * 1.0 * options.outHeight / options.outWidth);
} else {
newWidth = (int) (newHeight * 1.0 * options.outWidth / options.outHeight);
}
}
options.inJustDecodeBounds = false;
Log.i(TAG, "bitmap required size=" + newWidth + "x" + newHeight + ", orig=" + options.outWidth + "x" + options.outHeight + ", sample=" + options.inSampleSize);
Bitmap bm = BitmapFactory.decodeFile(path, options);
if (bm == null) {
Log.e(TAG, "bitmap decode failed");
return null;
}
Log.i(TAG, "bitmap decoded size=" + bm.getWidth() + "x" + bm.getHeight());
final Bitmap scale = Bitmap.createScaledBitmap(bm, newWidth, newHeight, true);
if (scale != null) {
bm.recycle();
bm = scale;
}
if (crop) {
final Bitmap cropped = Bitmap.createBitmap(bm, (bm.getWidth() - width) >> 1, (bm.getHeight() - height) >> 1, width, height);
if (cropped == null) {
return bm;
}
bm.recycle();
bm = cropped;
Log.i(TAG, "bitmap croped size=" + bm.getWidth() + "x" + bm.getHeight());
}
return bm;
} catch (final OutOfMemoryError e) {
Log.e(TAG, "decode bitmap failed: " + e.getMessage());
options = null;
}
return null;
}
}
bug记录
1.微信分享出错问题，MicroMsg.SDK.WXMediaMessage: checkArgs fail, thumbData is invalid MicroMsg.SDK.WXApiImplV10: sendReq checkArgs fail
解决方法 ：分享图片大小不能大于32kb。把图片改小与32KB就行了。
