Design and implementation of Android-based IoT applications

The design and implementation of Android-based IoT applications is corresponding to the current IoT, home, refrigerator, TV, air conditioner, desk lamp, smart lock and other connected applications.

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1. The main functions include registration and login, device information, usage statistics, my functions, etc.

2. Add devices, connect, enable devices, etc.

The login page code is as follows:

public class LoginActivity extends BaseActivity {
    @BindView(R.id.input_name)
    EditText inputName;
    @BindView(R.id.input_password)
    EditText inputPassword;
    @BindView(R.id.btn_login)
    AppCompatTextView btnLogin;
    @BindView(R.id.btn_register)
    AppCompatTextView btnRegister;

    @Override
    protected int getLayoutId() {
        return R.layout.activity_login;
    }

    @Override
    protected void init() {

    }


    @OnClick({R.id.btn_login, R.id.btn_register})
    public void onViewClicked(View view) {
        switch (view.getId()) {
            case R.id.btn_login:
                Login();
                break;

            case R.id.btn_register:
                showActivity(LoginActivity.this, RegisterActivity.class);
                break;
        }
    }


    private void Login() {
        String name = inputName.getText().toString();
        String pwd = inputPassword.getText().toString();
        if (TextUtils.isEmpty(name)) {
            showToast("请输入用户名");
            return;
        }

        if (TextUtils.isEmpty(pwd)) {
            showToast("请输入密码");
            return;
        }
        int i = SqliteDBUtils.getInstance(getApplicationContext()).Quer(pwd, name);
        if (i == 1) {
            MyApplication.getInstance().userBean = SqliteDBUtils.getInstance(getApplicationContext()).select(name);
            Log.e("用户信息", MyApplication.getInstance().userBean.toString());
            startActivity(new Intent(LoginActivity.this, MainActivity.class));
            finish();
            return;
        } else if (i == 0) {
            showToast("账号不存在");
            return;
        } else {
            showToast("登录失败,请检查输入信息是否正确");
        }


    }

    @Override
    public void onMessageEvent(EventMessage event) {
        super.onMessageEvent(event);

    }
}

home page

code show as below:

package com.project.pictrue;

import androidx.fragment.app.Fragment;

import android.view.KeyEvent;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

import com.project.pictrue.adapter.MainPagerAdapter;
import com.project.pictrue.base.BaseActivity;
import com.project.pictrue.fragment.HomeFragment;
import com.project.pictrue.fragment.TabMineFragment;
import com.project.pictrue.widget.NoScrollViewPager;

import java.util.ArrayList;
import java.util.List;

import butterknife.BindView;

public class MainActivity extends BaseActivity implements RadioGroup.OnCheckedChangeListener {


    @BindView(R.id.main_pager)
    NoScrollViewPager mainPager;
    @BindView(R.id.tab_home)
    RadioButton tabHome;
    @BindView(R.id.tab_dynamic)
    RadioButton tabDynamic;
    @BindView(R.id.tab_rank)
    RadioButton tabRank;
    @BindView(R.id.tab_me)
    RadioButton tabMe;
    @BindView(R.id.radioGroup)
    RadioGroup radioGroup;

    private boolean isStartLogin;
    private long clickTime;


    @Override
    protected int getLayoutId() {
        return R.layout.activity_main;
    }

    @Override
    protected void init() {
        List<Fragment> fragments = new ArrayList<>();
        fragments.add(new HomeFragment());
        fragments.add(new HomeFragment());
        fragments.add(new TabMineFragment());

        MainPagerAdapter adapter = new MainPagerAdapter(getSupportFragmentManager(), fragments);
        mainPager.setOffscreenPageLimit(3);
        mainPager.setAdapter(adapter);
        radioGroup.setOnCheckedChangeListener(this);
    }


    @Override
    public void onCheckedChanged(RadioGroup radioGroup, int i) {
        switch (i) {
            case R.id.tab_home:
                mainPager.setCurrentItem(0, false);
                break;
            case R.id.tab_dynamic:
                mainPager.setCurrentItem(1, false);
                break;
            case R.id.tab_rank:
                mainPager.setCurrentItem(1, false);
                break;
            case R.id.tab_me:
                mainPager.setCurrentItem(2, false);
                break;
        }
    }


    @Override
    protected void onDestroy() {
        super.onDestroy();
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            exit();
            return true;
        } else {
            return super.onKeyDown(keyCode, event);
        }
    }

    private void exit() {
        if ((System.currentTimeMillis() - clickTime) > 2000) {
            Toast.makeText(this, "再按一次后退键退出程序", Toast.LENGTH_SHORT).show();
            clickTime = System.currentTimeMillis();
        } else {
            try {
                //正常退出
                android.os.Process.killProcess(android.os.Process.myPid());
                System.exit(0);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}