TextInputEditText 替换EditText解决警告Missing autofillHints attribute以及实现错误提示

在使用EditText时，会出现Missing autofillHints attribute
解决方式1：使用ignore或者加入android:autofillHints 但是如果你api低于26，又会提示only used in API level 26 and higher 就又要使用ignore
解决方式2：使用TextInputEditText替代，本文主要讲解TextInputEditText，以邮箱格式作为讲解内容
判断是否是邮箱使用了正则表达式

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.text.method.HideReturnsTransformationMethod;
import android.text.method.PasswordTransformationMethod;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;

import com.google.android.material.textfield.TextInputEditText;
import com.google.android.material.textfield.TextInputLayout;
import com.thomas.android.base.R;

/**
 * I use TextInputEditText instead of EditText
 * 
 */
public class EditTextActivity extends AppCompatActivity {

    private TextInputEditText edit_email ,edit_email_second,edit_pwd;
    private TextInputLayout email_input_layout;
    private ImageView image_status;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_edit_text);
        edit_email = findViewById(R.id.edit_email);
        edit_email_second = findViewById(R.id.edit_email_second);
        email_input_layout = findViewById(R.id.email_input_layout);
        edit_pwd = findViewById(R.id.edit_pwd);
        image_status = findViewById(R.id.image_status);
        initEmailEvent();
        initEmailEventSecond();
        //android:inputType=textPassword //不可见密码
        //android:inputType=textVisiblePassword//可见密码
        //edit_pwd.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
        //edit_pwd.setTransformationMethod(PasswordTransformationMethod.getInstance());
    }

    /**
     *  I think use addTextChangedListener it will often do some useless work(is recommended)
     */
    private void initEmailEventSecond() {
        edit_email_second.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {

            }

            /**
             * @param charSequence text after you write
             * @param start how long before you write
             * @param before i wonder
             * @param count how long you write
             */
            @Override
            public void onTextChanged(CharSequence charSequence, int start, int before, int count) {
                if (charSequence.length() >= 4 && charSequence.toString().matches("\\w+@\\w+\\.\\w+")) {
                    email_input_layout.setErrorEnabled(false);
                } else {
                    email_input_layout.setError(getString(R.string.email_format_wrong));
                }
            }

            @Override
            public void afterTextChanged(Editable editable) {
            }
        });
    }

    /**
     * KeyEvent @link https://www.cnblogs.com/paulwinflo/p/4754701.html
     */
    private void initEmailEvent() {
        edit_email.setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View view, int keyCode, KeyEvent keyEvent) {
                disposeKeyEvent(keyCode,keyEvent);
                // false will continue event , I don't think so
                return false;
            }
        });
    }

    /**
     * first way to control input text (is not recommended)
     * @param keyCode what you pressed
     * @param keyEvent event happened when you pressed key
     */
    private void disposeKeyEvent(int keyCode, KeyEvent keyEvent) {
        // from this we can see that when you press key enter ,the event order is:  ACTION_DOWN ->ACTION_UP
        switch (keyEvent.getAction()){
            case KeyEvent.ACTION_DOWN:
                Toast.makeText(EditTextActivity.this,"ACTION_DOWN",Toast.LENGTH_SHORT).show();
                break;

            case KeyEvent.ACTION_UP:
                Toast.makeText(EditTextActivity.this,"ACTION_UP",Toast.LENGTH_SHORT).show();
                break;
        }
        // by the way , you can also control input text when ACTION_DOWN or ACTION_UP
        if (keyCode == KeyEvent.KEYCODE_ENTER) {
            String email = edit_email.getEditableText().toString().trim();
            // email regular
            if (email.matches("\\w+@\\w+\\.\\w+")) {
                image_status.setImageResource(R.drawable.ic_right);
            } else {
                image_status.setImageResource(R.drawable.ic_wrong);

            }
            image_status.setVisibility(View.VISIBLE);
        }
    }
}