TextInputLayout 用法

<?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"

    >

    <!--只能有一个子控件，必须是edit-->

    <android.support.design.widget.TextInputLayout

        android:layout_width="match_parent"

        android:id="@+id/tl_username"

        android:layout_height="wrap_content">

        <android.support.design.widget.TextInputEditText

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:hint="用户名"

            android:maxLength="25"

            android:maxLines="1"

            />

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

    <android.support.design.widget.TextInputLayout

        android:layout_width="match_parent"

        android:id="@+id/tl_password"

        android:layout_height="wrap_content">

        <android.support.design.widget.TextInputEditText

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:hint="密码"

            android:maxLength="25"

            android:maxLines="1"

            android:inputType="textPassword"

            />

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

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="登录"

        android:layout_gravity="center_horizontal"

        android:id="@+id/btnLogin"

        />

</LinearLayout>

package com.xiaozhuyisheng.jinjiedemos.activity;

import android.support.design.widget.TextInputLayout;

import android.view.View;

import com.xiaozhuyisheng.jinjiedemos.BaseActivity;

import com.xiaozhuyisheng.jinjiedemos.R;

import butterknife.BindView;

public class TextInputLayoutDemoActivity extends BaseActivity {

    @BindView(R.id.tl_password)

    TextInputLayout tl_password;

    @Override

    protected int initLayoutID() {

        return R.layout.activity_text_input;

    }

    @Override

    protected void initLogic() {

        findViewById(R.id.btnLogin).setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                tl_password.setError("密码错误");

            }

        });

    }

}