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);
}