Android 登录并跳转Activity

最新推荐文章于 2023-03-05 12:25:59 发布

原创最新推荐文章于 2023-03-05 12:25:59 发布 · 5.8k 阅读

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本文介绍了一个使用OkHttp实现的用户登录验证过程。该过程通过发送包含用户名和密码的POST请求到指定URL，并根据服务器返回的状态码来判断登录是否成功。如果登录成功，则启动新的活动；若失败，则显示相应的错误信息。

private void VerifyUserCredential() {
        String url= clsGlobal.ServiceUrl + "/*****";

        RequestBody body = new FormBody.Builder()
                .add("username", strUser)
                .add("password", strPwd)
                .build();

        Request request = new Request.Builder()
                .url(url)
                .post(body)
                .build();

        OkHttpClient client = new OkHttpClient();

        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                    e.printStackTrace();
                LoginActivity.this.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(LoginActivity.this, "无法与服务器连接，请稍后再试!", Toast.LENGTH_LONG).show();
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                Log.d("", response.toString());
                final String resCode=String.valueOf(response.code());
                if(response.isSuccessful()) {
                    if(response.code() == 200) {
                        final String userJson=response.body().string();
                        LoginActivity.this.runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                try {
                                    Intent intent = new Intent(LoginActivity.this, MenuActivity.class);
                                    startActivity(intent);
                                } catch (Exception e) {
                                    MessageBox.show("错误", e.getMessage(), MessageBox.Icon.Alert, LoginActivity.this, false);
                                } 
                            }
                        });

                    }else if(response.code() == 204){
                        LoginActivity.this.runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                Toast.makeText(LoginActivity.this,"用户名或密码错误，请重新检查!["+resCode+"]", Toast.LENGTH_LONG).show();
                            }
                        });
                    }else{
                        LoginActivity.this.runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                Toast.makeText(LoginActivity.this,"用户名或密码错误，请重新检查!["+resCode+"]", Toast.LENGTH_LONG).show();
                            }
                        });
                    }
                }else
                {
                    LoginActivity.this.runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(LoginActivity.this,"连接失败，请重新检查!["+resCode+"]", Toast.LENGTH_LONG).show();
                        }
                    });
                }
            }
        });
    }