Android TextInputLayout更好看的输入框加EvenBus传值

导入依赖

compile 'com.android.support:design:22.2.0'
compile 'org.greenrobot:eventbus:3.0.0'

效果图

XML布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"
    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"
    android:orientation="vertical"
    tools:context="com.example.am20171107.MainActivity">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="0.5"
        android:orientation="vertical">

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:src="@mipmap/umeng_socialize_qq"/>

    </RelativeLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="0.5"
        android:orientation="vertical">

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

            <EditText
                android:id="@+id/username"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inputType="textEmailAddress"
                android:hint="Username"/>

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

        <android.support.design.widget.TextInputLayout
            android:id="@+id/passwordWrapper"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/usernameWrapper"
            android:layout_marginTop="4dp">

            <EditText
                android:id="@+id/password"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inputType="textPassword"
                android:hint="Password"/>

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

        <Button
            android:id="@+id/btn"
            android:layout_marginTop="4dp"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Login"/>

    </LinearLayout>

</LinearLayout>

MainActivity

private Button btn;
    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;

    public boolean validateEmail(String email) {
        matcher = pattern.matcher(email);
        return matcher.matches();
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final TextInputLayout usernameWrapper = (TextInputLayout) findViewById(R.id.usernameWrapper);
        final TextInputLayout passwordWrapper = (TextInputLayout) findViewById(R.id.passwordWrapper);
        usernameWrapper.setHint("Username");
        passwordWrapper.setHint("Password");
        btn= (Button) findViewById(R.id.btn);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideKeyboard();
                String username = usernameWrapper.getEditText().getText().toString();
                String password = passwordWrapper.getEditText().getText().toString();
                if (!validateEmail(username)) {
                    usernameWrapper.setError("Not a valid email address!");
                } else if (!validatePassword(password)) {
                    passwordWrapper.setError("Not a valid password!");
                } else {
                    usernameWrapper.setErrorEnabled(false);
                    passwordWrapper.setErrorEnabled(false);
                    EventBus.getDefault().postSticky(new FirstEvent(username,password));
                    startActivity(new Intent(MainActivity.this,LoginActivity.class));
                    doLogin();

                }


            }

        });

    }
    private void hideKeyboard() {
        View view = getCurrentFocus();
        if (view != null) {
            ((InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE)).
                    hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
        }
    }
    public boolean validatePassword(String password) {
        return password.length() > 5;
    }
    public void doLogin() {
        Toast.makeText(getApplicationContext(), "OK! I'm performing login.", Toast.LENGTH_SHORT).show();
        // TODO: login procedure; not within the scope of this tutorial.
    }

显示Evenbus传值的activity

private TextView t1;
    private TextView t2;
    private Button send;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        t1= (TextView) findViewById(R.id.t1);
        t2= (TextView) findViewById(R.id.t2);
        send= (Button) findViewById(R.id.send);

        send.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                EventBus.getDefault().register(LoginActivity.this);
            }
        });

    }
    @Subscribe(sticky = true)
    public void onEventMainThread(FirstEvent event) {

        String name = event.getName();
        String password = event.getPassword();
        t1.setText(name);
        t2.setText(password);
    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
        EventBus.getDefault().unregister(this);
    }