MD5新属性之TextInputLayout

【核心代码】

/**
* @Author Lee
* @Time 2018/3/20
* @Theme  TextInputLayout 相当Linearlayout 容器
*/

public class TextInputLayoutActivity extends AppCompatActivity implements View.OnClickListener {

private EditText mEtAccount;
private EditText mEtAPassword;
private TextInputLayout mTilAccount;
private TextInputLayout mTilPwd;
private Button mBtnLogin;

private static final String EMAIL_PATTERN = "^[a-zA-Z0-9#_~!$&'()*+,;=:.\"(),:;<>@\\[\\]\\\\]+@[a-zA-Z0-9-]+(\\.[a-zA-Z0-9-]+)*$";
private Pattern pattern = Pattern.compile(EMAIL_PATTERN);
private Matcher matcher;


@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activit_text_input_layout);
    initView();
}

private void initView() {


    mEtAccount = findViewById(R.id.et_account);
    mEtAPassword = findViewById(R.id.et_password);
    mBtnLogin = findViewById(R.id.btn_login);

    mTilAccount = findViewById(R.id.til_account);
    mTilPwd = findViewById(R.id.til_pwd);

/*
    mEtAccount.setHint("请输入账号");
    mEtAPassword.setHint("请输入密码");*/

    mTilAccount.setHint("请输入账号");
    mTilPwd.setHint("请输入密码");

    mEtAccount.setOnClickListener(this);
    mBtnLogin.setOnClickListener(this);


}

/**
 *  验证邮箱
 * @param email
 * @return
 */
public boolean validateEmail(String email) {
    matcher = pattern.matcher(email);
    return matcher.matches();
}

/**
 * 验证密码
 * @param password
 * @return
 */
public boolean validatePassword(String password) {
    return password.length() > 5;
}

/**
 * 隐藏键盘
 */
public void hindSoftInput(){

    View view1 = getCurrentFocus();
    if(view1 != null){

        InputMethodManager mInputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        mInputManager.hideSoftInputFromWindow(view1.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);

    }
}



@Override
public void onClick(View view) {

    switch (view.getId()) {
        case R.id.btn_login:

            hindSoftInput();

            // getEditText() 相当于 findViewById（）
            String username = mTilAccount.getEditText().getText().toString();
            String password = mTilPwd.getEditText().getText().toString();

            if(!validateEmail(username)){

                mTilAccount.setError("不是一个有效的邮箱地址");

            }else if( ! validatePassword(password)){

                mTilPwd.setError("不是一个有效的密码");

             }else{

                mTilAccount.setErrorEnabled(false);
                mTilPwd.setErrorEnabled(false);

            }

            break;

    }
    }
}

【xml 布局】

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<android.support.design.widget.TextInputLayout
    android:id="@+id/til_account"
    android:focusable="false"
    android:focusableInTouchMode="false"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <EditText
        android:id="@+id/et_account"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
     />

</android.support.design.widget.TextInputLayout>

<android.support.design.widget.TextInputLayout
    android:id="@+id/til_pwd"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <EditText
        android:id="@+id/et_password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
      />

</android.support.design.widget.TextInputLayout>

<Button
    android:id="@+id/btn_login"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="登录"
    />
 </LinearLayout>

【注】TextInputLayout控件和LinearLayout完全一样，它只是一个容器。跟ScrollView一样，TextInputLayout只接受一个子元素。子元素需要是一个EditText元素。

【来源】http://www.jcodecraeer.com/a/basictutorial/2015/0821/3338.html