Android(安卓)实现微信登录

1.在微信开放平台创建移动应用，并通过审核
2.导入包 compile ‘com.tencent.mm.opensdk:wechat-sdk-android-with-mta:+’
3.AndroidManifest.xml 设置权限和返回结果

<uses-permission android:name="android.permission.INTERNET"/><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/><uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/><uses-permission android:name="android.permission.READ_PHONE_STATE"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>         <activity            android:name=".wxapi.WXEntryActivity"            android:exported="true"            android:label="@string/app_name" />

public class WXEntryActivity extends Activity implements IWXAPIEventHandler{    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        IWXAPI api = WXAPIFactory.createWXAPI(this, Contonts.APP_ID, true);        api.handleIntent(getIntent(),this);        finish();    }    // 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 baseReq) {    }    @Override    public void onResp(BaseResp baseResp) {        String result;        switch (baseResp.errCode) {            case BaseResp.ErrCode.ERR_OK:                result = "登录成功";                break;            case BaseResp.ErrCode.ERR_AUTH_DENIED:                result = "用户拒绝授权";                break;            case BaseResp.ErrCode.ERR_USER_CANCEL :                result = "用户取消";                break;            default:                result = "失败";                break;        }        if (result != null) {            Toast.makeText(this, baseResp.errCode + result, Toast.LENGTH_SHORT).show();        }    }}

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