使用微信功能首先就要做好微信的相关配置：
去微信平台申请的app应用，绑定一个app,并去申请功能的使用权限：
1 . 在微信平台的申请的那个app,打包后（非debug包），在打包后的app应用软件里面下载一个app签名工具，在app签名工具里面输入appmanifest里面的包名，包名是package里面的，一定要是这个包名，别把包名弄混了，最后生成一个签名，放在微信开放平台的信息输入框里面），
2 . 然后就是调用微信的回调类： WXEntryActivity 而且这个类名必须是这个，而这个类名必须在.wxapi包名下，不然微信无法掉起
3.接着就是配置清单：exported="" 这个属性是必须要添加的
<activity android:name=".wxapi.WXEntryActivity"
android:label="@string/app_name"
android:exported="true"/>
这样配置就完成了。
下面给大家分享一下源码：
这个是微信主页面，下面写了一个点击按钮，点击之后就会执行点击按钮里面的方法，需要WXEntryActivity类回调一个code值，通过这个code值就能请求一下数据，获得用户信息。
LoginActivity
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.example.hulei.wechatlogin.App;
import com.example.hulei.wechatlogin.R;
import com.example.hulei.wechatlogin.activity.MainActivity;
import com.example.hulei.wechatlogin.utils.HttpCallBackListener;
import com.example.hulei.wechatlogin.utils.HttpUtil;
import com.example.hulei.wechatlogin.utils.PrefParams;
import com.tencent.mm.sdk.modelmsg.SendAuth;
import com.tencent.mm.sdk.openapi.IWXAPI;
import com.tencent.mm.sdk.openapi.WXAPIFactory;
import org.json.JSONException;
import org.json.JSONObject;
/**
* Created by asus on 2016/1/16.
*/
public class LoginActivity extends Activity {
public static final String TAG = "loginFragment";
private LinearLayout mLoginWeChat;
private IWXAPI api;
private ReceiveBroadCast receiveBroadCast;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.frag_login, container, false);
rootView.setTag(TAG);
mLoginWeChat = (LinearLayout) rootView.findViewById(R.id.layout_login_wx);
mLoginWeChat.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
weChatAuth();
}
});
return rootView;
}
@Override
public void onResume() {
super.onResume();
receiveBroadCast = new ReceiveBroadCast();
IntentFilter filter = new IntentFilter();
filter.addAction("authlogin");
getActivity().registerReceiver(receiveBroadCast, filter);
}
@Override
public void onDestroy() {
super.onDestroy();
getActivity().unregisterReceiver(receiveBroadCast);
}
private void weChatAuth() {
if (api == null) {
api = WXAPIFactory.createWXAPI(LoginActivity.this, App.WX_APPID, true);
}
SendAuth.Req req = new SendAuth.Req();
req.scope = "snsapi_userinfo";
req.state = "wx_login_duzun";
api.sendReq(req);
}
public void getAccessToken() {
SharedPreferences WxSp = getApplicationContext()
.getSharedPreferences(PrefParams.spName, Context.MODE_PRIVATE);
String code = WxSp.getString(PrefParams.CODE, "");
final SharedPreferences.Editor WxSpEditor = WxSp.edit();
Log.d(TAG, "-----获取到的code----" + code);
String url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="
+ App.WX_APPID
+ "&secret="
+ App.WX_APPSecret
+ "&code="
+ code
+ "&grant_type=authorization_code";
Log.d(TAG, "--------即将获取到的access_token的地址--------");
HttpUtil.sendHttpRequest(url, new HttpCallBackListener() {
@Override
public void onFinish(String response) {
//解析以及存储获取到的信息
try {
JSONObject jsonObject = new JSONObject(response);
Log.d(TAG, "-----获取到的json数据1-----" + jsonObject.toString());
String access_token = jsonObject.getString("access_token");
Log.d(TAG, "--------获取到的access_token的地址--------" + access_token);
String openid = jsonObject.getString("openid");
String refresh_token = jsonObject.getString("refresh_token");
if (!access_token.equals("")) {
WxSpEditor.putString(PrefParams.ACCESS_TOKEN, access_token);
WxSpEditor.apply();
}
if (!refresh_token.equals("")) {
WxSpEditor.putString(PrefParams.REFRESH_TOKEN, refresh_token);
WxSpEditor.apply();
}
if (!openid.equals("")) {
WxSpEditor.putString(PrefParams.WXOPENID, openid);
WxSpEditor.apply();
getPersonMessage(access_token, openid);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
@Override
public void onError(Exception e) {
Toast.makeText(getActivity(), "通过code获取数据没有成功", Toast.LENGTH_SHORT).show();
}
});
}
private void getPersonMessage(String access_token, String openid) {
String url = "https://api.weixin.qq.com/sns/userinfo?access_token="
+ access_token
+ "&openid="
+ openid;
HttpUtil.sendHttpRequest(url, new HttpCallBackListener() {
@Override
public void onFinish(String response) {
try {
JSONObject jsonObject = new JSONObject(response);
Log.d(TAG, "------获取到的个人信息------" + jsonObject.toString());
} catch (JSONException e) {
e.printStackTrace();
}
}
@Override
public void onError(Exception e) {
Toast.makeText(getActivity(), "通过openid获取数据没有成功", Toast.LENGTH_SHORT).show();
}
});
}
class ReceiveBroadCast extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
getAccessToken();
Intent intent1 = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent1);
}
}
}
下面的就是回调类，大家一定要记住我上面定义的格式啊!
WXEntryActivity
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;
import com.example.hulei.wechatlogin.App;
import com.example.hulei.wechatlogin.utils.PrefParams;
import com.tencent.mm.sdk.modelbase.BaseReq;
import com.tencent.mm.sdk.modelbase.BaseResp;
import com.tencent.mm.sdk.modelmsg.SendAuth;
import com.tencent.mm.sdk.openapi.IWXAPI;
import com.tencent.mm.sdk.openapi.IWXAPIEventHandler;
import com.tencent.mm.sdk.openapi.WXAPIFactory;
/**
* Created by asus on 2016/1/16.
*/
public class WXEntryActivity extends AppCompatActivity implements IWXAPIEventHandler {
private IWXAPI api;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
api = WXAPIFactory.createWXAPI(this, App.WX_APPID, false);
api.handleIntent(getIntent(), this);
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
setIntent(intent);
api.handleIntent(intent, this);
finish();
}
@Override
public void onReq(BaseReq baseReq) {
}
@Override
public void onResp(BaseResp baseResp) {
String result = "";
switch (baseResp.errCode) {
case BaseResp.ErrCode.ERR_OK:
String code = ((SendAuth.Resp) baseResp).code;
SharedPreferences WxSp = getApplicationContext().getSharedPreferences(PrefParams.spName, Context.MODE_PRIVATE);
SharedPreferences.Editor WxSpEditor = WxSp.edit();
WxSpEditor.putString(PrefParams.CODE,code);
WxSpEditor.apply();
Intent intent = new Intent();
intent.setAction("authlogin");
WXEntryActivity.this.sendBroadcast(intent);
finish();
break;
case BaseResp.ErrCode.ERR_USER_CANCEL:
result = "发送取消";
Toast.makeText(this, result, Toast.LENGTH_LONG).show();
finish();
break;
case BaseResp.ErrCode.ERR_AUTH_DENIED:
result = "发送被拒绝";
Toast.makeText(this, result, Toast.LENGTH_LONG).show();
finish();
break;
default:
result = "发送返回";
Toast.makeText(this, result, Toast.LENGTH_LONG).show();
finish();
break;
}
}
}
这两个类就可以调用微信了，下面分享一下我代码里面使用的工具类：
HttpUtil
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
/**
* Created by asus on 2016/1/16.
*/
public class HttpUtil {
public static void sendHttpRequest(final String address,final HttpCallBackListener listener){
new Thread(
new Runnable() {
@Override
public void run() {
HttpURLConnection connection = null;
try {
URL url = new URL(address);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(8000);
connection.setReadTimeout(8000);
InputStream in = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder response = new StringBuilder();
String line;
while ((line = reader.readLine())!=null){
response.append(line);
}
if (listener!= null){
listener.onFinish(response.toString());
}
} catch (MalformedURLException e) {
if (listener!=null){
listener.onError(e);
}
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
).start();
}
}
HttpCallBackListener
public interface HttpCallBackListener {
void onFinish(String response);
void onError(Exception e);
}
PrefParams
public class PrefParams {
//微信登錄
public static final String spName = "WX_SP";
public static final String CODE = "code";
public static final String ACCESS_TOKEN = "access_token";
public static final String REFRESH_TOKEN = "refresh_token";
public static final String WXOPENID = "wxopenid";
public static final String EXPIRES_IN = "expires_in";
public static final String IS_AUTH_LOGIN = "is_auth_login";
}
Application
public class App extends Application {
public static final String WX_APPID = "";
public static final String WX_APPSecret = "";
private IWXAPI api;
@Override
public void onCreate() {
super.onCreate();
api = WXAPIFactory.createWXAPI(this, WX_APPID, true);
api.registerApp(WX_APPID);
}
}