floatingActionBar,SnackBar;TextInputLayout

floatingActionBar,SnackBar;TextInputLayout：

布局代码：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.floatingactionbar.MainActivity">

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fb"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
  //背景色
    app:backgroundTint="@color/aaa"
   //前景色
    app:rippleColor="@color/bbb"
     //悬浮高度
    app:elevation="30dp"
    //大小
    app:fabSize="normal"
    android:src="@mipmap/ic_launcher"/>

    <android.support.design.widget.TextInputLayout
        android:id="@+id/tl"
        android:layout_width="match_parent"
        app:errorTextAppearance="@color/colorPrimary"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/et"
            android:layout_width="match_parent"
            android:hint="请输入手机号"
            android:layout_height="wrap_content" />
    </android.support.design.widget.TextInputLayout>

</RelativeLayout>

代码：
public class MainActivity extends AppCompatActivity {

    private FloatingActionButton fb;
    private EditText et;
    private TextInputLayout tl;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        fb = (FloatingActionButton) findViewById(R.id.fb);
        et= (EditText) findViewById(R.id.et);
        tl= (TextInputLayout) findViewById(R.id.tl);


        et.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                if (s.length()>11){
                    tl.setErrorEnabled(true);
                    tl.setError("输入长度超过了11位");
                }else{
                    tl.setErrorEnabled(false);
                }

            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });

        fb.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Snackbar.make(v,"我好困啊，你困吗",Snackbar.LENGTH_LONG).setAction("点我查看回复", new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Toast.makeText(MainActivity.this, "困得一笔", Toast.LENGTH_SHORT).show();
                    }
                }).show();
            }
        });
    }
}

运行效果：