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

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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("\\[email protected]\\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("\\[email protected]\\w+\\.\\w+")) {                image_status.setImageResource(R.drawable.ic_right);            } else {                image_status.setImageResource(R.drawable.ic_wrong);            }            image_status.setVisibility(View.VISIBLE);        }    }}

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