准备工作
先申请应用的各种ID，官网地址：https://open.weixin.qq.com
集成
- APP下的build
implementation 'com.tencent.mm.opensdk:wechat-sdk-android-without-mta:+'
implementation 'com.squareup.okhttp3:okhttp:3.4.1'- 初始化api，application中：
private void initWX() {
//APP_ID是指你应用在微信开放平台上的AppID，记得替换。
mWxApi = WXAPIFactory.createWXAPI(this, APP_ID, false);
// 将该app注册到微信
mWxApi.registerApp(APP_ID);
}- 主页面，点击登录调用代码
private void checkLogin() {
if (!MyApp.mWxApi.isWXAppInstalled()) {
Toast.makeText(this, "您还未安装微信客户端", Toast.LENGTH_SHORT).show();
return;
}
final SendAuth.Req req = new SendAuth.Req();
req.scope = "snsapi_userinfo";
req.state = "diandi_wx_login";
MyApp.mWxApi.sendReq(req);
}- 包下新建文件夹wxapi，处理微信登录逻辑界面 WXEntryActivity。
public class WXEntryActivity extends AppCompatActivity implements IWXAPIEventHandler {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().hide();
MyApp.mWxApi.handleIntent(getIntent(), this);
}
// 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) {
}
/**
* 请求回调结果处理
*
*/
@Override
public void onResp(BaseResp baseResp) {
Log.e("whr", baseResp.errStr);
Log.e("whr", "错误码 : " + baseResp.errCode + "");
switch (baseResp.errCode) {
case BaseResp.ErrCode.ERR_OK:
String code = ((SendAuth.Resp) baseResp).code;
Log.d("whr", code + "");
//获取accesstoken
getAccessToken(code);
break;
case BaseResp.ErrCode.ERR_AUTH_DENIED://用户拒绝授权
Log.d("whr", "用户拒绝授权");
finish();
break;
case BaseResp.ErrCode.ERR_USER_CANCEL://用户取消
Log.d("whr", "用户取消");
finish();
break;
default:
finish();
break;
}
}
/**
* 获取授权口令
*/
private void getAccessToken(String code) {
createProgressDialog();
//获取授权
StringBuffer loginUrl = new StringBuffer();
// appid：应用唯一标识，在微信开放平台提交应用审覈通过后获得。
// secret：应用密钥AppSecret，在微信开放平台提交应用审覈通过后获得。
// code：填写第一步获取的code参数。
// grant_type：填authorization_code。
loginUrl.append("https://api.weixin.qq.com/sns/oauth2/access_token")
.append("?appid=")
.append(MyApp.APP_ID)
.append("&secret=")
.append(MyApp.APP_SECRET)
.append("&code=")
.append(code)
.append("&grant_type=authorization_code");
Log.d("whr--->loginUrl", loginUrl.toString());
/**
* 处理获取的授权信息结果 * @param response 授权信息结果
*/
OkHttpClient okHttpClient = new OkHttpClient();
final Request request = new Request.Builder()
.url(loginUrl.toString())
.get()//默认就是GET请求，可以不写
.build();
Call call = okHttpClient.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.d("whr", "onFailure: ");
mProgressDialog.dismiss();
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String responseInfo = response.body().string();
Log.d("whr", "onResponse: " + responseInfo);
String access = null;
String openId = null;
try {
JSONObject jsonObject = new JSONObject(responseInfo);
access = jsonObject.getString("access_token");
openId = jsonObject.getString("openid");
} catch (JSONException e) {
e.printStackTrace();
}
getUserInfo(access, openId);
}
});
}
ProgressDialog mProgressDialog;
Context mContext;
private void createProgressDialog() {
mContext = this;
mProgressDialog = new ProgressDialog(mContext);
mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);//转盘
mProgressDialog.setCancelable(false);
mProgressDialog.setCanceledOnTouchOutside(false);
mProgressDialog.setTitle("提示");
mProgressDialog.setMessage("登录中，请稍后");
mProgressDialog.show();
}
private void getUserInfo(String access, String openid) {
String getUserInfoUrl = "https://api.weixin.qq.com/sns/userinfo?access_token="
+ access + "&openid=" + openid;
OkHttpClient okHttpClient = new OkHttpClient();
final Request request = new Request.Builder()
.url(getUserInfoUrl)
.get()//默认就是GET请求，可以不写
.build();
Call call = okHttpClient.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.d("whr", "onFailure: ");
mProgressDialog.dismiss();
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String responseInfo = response.body().string();
Log.d("whr", "onResponse: " + responseInfo);
SharedPreferences.Editor editor = getSharedPreferences("userInfo", MODE_PRIVATE).edit();
editor.putString("responseInfo", responseInfo);
editor.commit();
finish();
mProgressDialog.dismiss();
}
});
}
}
- 首页拿回调信息就好
SharedPreferences sp = getSharedPreferences("userInfo", MODE_PRIVATE);
String responseInfo = sp.getString("responseInfo", "");
Log.e("whr", "responseInfo: " + responseInfo);
if (!responseInfo.isEmpty()) {
try {
JSONObject jsonObject = new JSONObject(responseInfo);
nickname = jsonObject.getString("nickname");
headImgurl = jsonObject.getString("headimgurl");
} catch (JSONException e) {
e.printStackTrace();
}
textView.setText("暱称：" + nickname + "\n" + "头像：" + headImgurl);
Log.e("whr", "暱称：" + nickname + "\n" + "头像：" + headImgurl);
SharedPreferences.Editor editor = getSharedPreferences("userInfo", MODE_PRIVATE).edit();
editor.clear();
editor.commit();
}- AndroidManifest.xml
//权限
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<application>
...
<activity android:name=".wxapi.WXEntryActivity" android:exported="true">
</application>
注意事项：
- 一直提示我签名与平台签名不对应，错误码 -6。我覈对了N多次包名与签名，发现都没错了。后来发现把APP微信卸载了重新安装就能调起了。也是头疼啊。。。
