FlexboxLayout的使用

implementation 'com.google.android.flexbox:flexbox:3.0.0'

package com.cias.aii.activity

import android.content.Context
import android.content.Intent
import android.content.res.ColorStateList
import android.graphics.Color
import android.graphics.drawable.Drawable
import android.graphics.drawable.GradientDrawable
import android.text.Editable
import android.text.TextWatcher
import android.view.inputmethod.InputMethodManager
import android.widget.TextView
import androidx.core.content.ContextCompat
import androidx.lifecycle.Observer
import com.cias.aii.App
import com.cias.aii.BuildConfig
import com.cias.aii.R
import com.cias.aii.base.activity.BaseMVActivity
import com.cias.aii.util.AESUtil
import com.cias.aii.util.SpUtil
import com.cias.aii.util.ToastUtil
import com.cias.aii.util.litepal.LitePalUtil
import com.cias.aii.viewmodel.PersonalViewModel
import com.google.android.flexbox.FlexboxLayout
import kotlinx.android.synthetic.main.activity_login.*

class LoginActivity : BaseMVActivity<PersonalViewModel>() {

    override fun getLayoutId(): Int = R.layout.activity_login

    private val tags = arrayOf("一般地面", "地库", "高层", "高速", "高架", "涉水")
    private var selectedIndex = 0
    fun Int.dpToPx(context: Context): Int = (this * context.resources.displayMetrics.density).toInt()
    private fun createLayoutParams(): FlexboxLayout.LayoutParams {
        return FlexboxLayout.LayoutParams(
            FlexboxLayout.LayoutParams.WRAP_CONTENT,
            FlexboxLayout.LayoutParams.WRAP_CONTENT
        ).apply {
            setMargins(5.dpToPx(this@LoginActivity), 8.dpToPx(this@LoginActivity), 8.dpToPx(this@LoginActivity), 5.dpToPx(this@LoginActivity))
        }
    }

    private fun TextView.updateStyle(selected: Boolean) {
        background = createBackground(selected)
        textSize=16f
        setTextColor(if (selected) Color.WHITE else Color.BLACK)
    }

    private fun createBackground(selected: Boolean): Drawable {
        return GradientDrawable().apply {
            cornerRadius = 4.dpToPx(this@LoginActivity).toFloat()
            setColor(if (selected) Color.parseColor("#2196F3") else Color.parseColor("#EEEEEE"))
        }
    }
    override fun initView() {
        val flexLayout = findViewById<FlexboxLayout>(R.id.flexLayout)

        tags.forEachIndexed { index, text ->
            val textView = TextView(this).apply {
                layoutParams = createLayoutParams()
                setText(text)
                setPadding(10.dpToPx(this@LoginActivity), 5.dpToPx(this@LoginActivity), 10.dpToPx(this@LoginActivity), 5.dpToPx(this@LoginActivity))
                isClickable = true
                updateStyle(selected = index == selectedIndex)

                setOnClickListener {
                    if (selectedIndex != index) {
                        // 更新前一个选中项
                        (flexLayout.getChildAt(selectedIndex) as TextView).updateStyle(false)
                        // 更新当前选中项
                        selectedIndex = index
                        updateStyle(true)
                    }
                }
            }
            flexLayout.addView(textView)
        }

        //如果之前是电话号码就直接取出来
        val phoneEncrypt = SpUtil.get(this, SpUtil.phone, "")
        var phone = ""
        if (AESUtil.decrypt(phoneEncrypt) != null) {
            if (phoneEncrypt.length == 11) {
                phone = phoneEncrypt
            } else {
                phone = AESUtil.decrypt(phoneEncrypt)
            }
        }
        et_name.setText(phone)
        et_name.setSelection(phone.length)

        tv_forget_pwd.setOnClickListener {
            val intent = Intent(this, ForgetPwdActivity::class.java)
            startActivity(intent)
        }

//        tv_privacy_policy.setOnClickListener {
//            PageWebViewActivity.go2PageWebViewActivity(
//                this,
//                PRIVACY_POLICY_URL,
//                getString(R.string.privacy_policy)
//            )
//        }
//
//        tv_user_policy.setOnClickListener {
//            PageWebViewActivity.go2PageWebViewActivity(
//                this,
//                USER_AGREEMENT_URL,
//                getString(R.string.user_policy)
//            )
//        }

        bt_login.setOnClickListener {
            login()
        }

        iv_logo.setOnClickListener {
            if ("develop" == BuildConfig.FLAVOR || "qa" == BuildConfig.FLAVOR || "beta" == BuildConfig.FLAVOR) {
                val intent = Intent(this, ConfigBaseUrlActivity::class.java)
                startActivity(intent)
            }
        }

        et_name.addTextChangedListener(object : TextWatcher {
            override fun afterTextChanged(s: Editable?) {
            }

            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
            }

            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
                checkLoginButtonEnable(s.toString(), et_pwd.text.toString())
            }
        })

        et_pwd.addTextChangedListener(object : TextWatcher {
            override fun afterTextChanged(s: Editable?) {
            }

            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
            }

            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
                checkLoginButtonEnable(et_name.text.toString(), s.toString())
            }
        })
    }

    private fun checkLoginButtonEnable(userName: String, password: String) {
        val enable = userName.isNotEmpty() && password.isNotEmpty()
        bt_login.backgroundTintList = ColorStateList.valueOf(
            if (enable)
                ContextCompat.getColor(this, R.color.common_button_color)
            else
                ContextCompat.getColor(this, R.color.common_disable_button_color)
        )
        bt_login.isEnabled = enable
    }

    private fun login() {
        if (!protocolBox.isChecked) {
            forceHideKeyboard()
            ToastUtil.show("请勾选同意后再登录")
            return
        }
//        Storage.Protocol.isAgreeProtocol = true
        SpUtil.put(this, SpUtil.isProtocolAgreed, "1")
        val userName = et_name.text.toString()
        val password = et_pwd.text.toString()

        mViewModel.login(userName, password).observe(this, Observer {
            if (it) {
                val intent = Intent(this, MainActivity::class.java)
                startActivity(intent)
                App.instance.initThirdSdk()
                finish()
            }
        })
    }

    private fun forceHideKeyboard() {
        val imm = getSystemService(INPUT_METHOD_SERVICE) as InputMethodManager
        imm.hideSoftInputFromWindow(window.decorView.windowToken, 0) // 强制隐藏键盘
    }
}