之前使用软输入模式没有问题，但是在包含ConstraintLayout之后，出现键盘时fragment内容不会上移。
list
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="ru.pinspb.pinsupport">
<uses-feature
android:name="android.software.leanback"
android:required="false" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<permission
android:name="ru.pinspb.pinsupport.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="ru.pinspb.pinsupport.permission.C2D_MESSAGE" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<application
android:name=".PinApp"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme.NoActionBar">
<activity
android:name=".auth.ui.HomeActivity"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.LEANBACK_LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".front.ui.FrontActivity"
android:launchMode="singleTop" />
<activity
android:name=".chats.ui.InitChatActivity"
android:launchMode="singleTop"
android:windowSoftInputMode="stateHidden" />
</application>
</manifest>
fragment
public class AuthFragment extends Fragment implements ValidationListener {
private static final String TAG = AuthFragment.class.toString();
// UI references.
@NotEmpty @Email @BindView(R.id.email) EditText email;
@NotEmpty @BindView(R.id.password) EditText password;
@BindView(R.id.auth_sign_in) Button signIn;
@BindView(R.id.remember_me) CheckBox remember;
@BindView(R.id.forgot) TextView forgot;
@BindView(R.id.error) TextView errorField;
@Inject @ApplicationContext
Context context;
private Validator validator;
private onAuthenticateEventListener authenticatableEventListener;
private String error = Constants.EMPTY_STRING;
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
authenticatableEventListener = (onAuthenticateEventListener) activity;
} catch (ClassCastException e) {
e.printStackTrace();
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View render = inflater.inflate(R.layout.fragment_auth, container, false);
ButterKnife.bind(this, render);
final View activityRootView = render.findViewById(R.id.activity_root);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(() -> {
int heightDiff = activityRootView.getRootView().getHeight() - activityRootView.getHeight();
if (heightDiff > Helper.dpToPx(container.getContext(), 200)) { // if more than 200 dp, it's probably a keyboard...
Log.d(TAG, "heightDiff: " + heightDiff);
}
});
return render;
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
errorField.setText(this.error);
if(this.error.equals(Constants.EMPTY_STRING)) {
errorField.setVisibility(View.GONE);
} else {
errorField.setVisibility(View.VISIBLE);
}
// Set up the login form.
password.setOnEditorActionListener((textView, id, keyEvent) -> {
if (id == R.id.login || id == EditorInfo.IME_NULL) {
attemptLogin();
return true;
}
return false;
});
validator = new Validator(this);
validator.setValidationListener(this);
signIn.setOnClickListener(v -> validator.validate());
}
/**
* Attempts to sign in or register the account specified by the login form.
* If there are form errors (invalid email, missing fields, etc.), the
* errors are presented and no actual login attempt is made.
*/
private void attemptLogin() {
// Store values at the time of the login attempt.
String email = this.email.getText().toString();
String password = this.password.getText().toString();
Bundle bundle = new Bundle();
bundle.putString("email", email);
bundle.putString("password", password);
authenticatableEventListener.sendAuthRequest(bundle);
}
@Override
public void onValidationSucceeded() {
attemptLogin();
}
@Override
public void onValidationFailed(List<ValidationError> errors) {
for (ValidationError error : errors) {
Log.d(TAG, "onValidationFailed: " + error.getCollatedErrorMessage(context));
View view = error.getView();
String message = error.getCollatedErrorMessage(context);
// Display error messages ;)
if (view instanceof EditText) {
((EditText) view).setError(message);
} else {
Toast.makeText(context, message, Toast.LENGTH_LONG).show();
}
}
}
public void setErrors(String text) {
this.error = text;
}
public interface onAuthenticateEventListener {
void sendAuthRequest(Bundle params);
void showErrors(String error);
}
}
布局
<android.support.constraint.ConstraintLayout 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:gravity="center_horizontal"
android:orientation="vertical"
android:background="@color/bg"
android:id="@+id/activity_root">
<!-- Login progress -->
<ProgressBar
android:id="@+id/login_progress"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"
app:layout_constraintLeft_toLeftOf="@+id/activity_root"
tools:layout_constraintLeft_creator="1"
app:layout_constraintTop_toTopOf="@+id/activity_root"
tools:layout_constraintTop_creator="1"
app:layout_constraintRight_toLeftOf="@+id/activity_root"
tools:layout_constraintRight_creator="1"
app:layout_constraintBottom_toTopOf="@+id/activity_root"
tools:layout_constraintBottom_creator="1" />
<ImageView
android:layout_width="120dp"
android:layout_height="80dp"
android:id="@+id/logo"
app:srcCompat="@drawable/logo_pin_support"
android:contentDescription="@string/contentDiscription"
app:layout_constraintLeft_toLeftOf="@+id/activity_root"
tools:layout_constraintLeft_creator="1"
app:layout_constraintTop_toTopOf="@+id/activity_root"
android:layout_marginTop="56dp"
tools:layout_constraintTop_creator="1"
app:layout_constraintRight_toRightOf="@+id/activity_root"
tools:layout_constraintRight_creator="1" />
<EditText
android:id="@+id/email"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="@string/auth.email"
android:inputType="textEmailAddress"
android:maxLines="1"
android:drawablePadding="10dp"
android:paddingTop="20dp"
android:paddingBottom="20dp"
android:textSize="@dimen/auth.sizes"
android:autoLink="none"
android:focusableInTouchMode="true"
tools:ignore="RtlHardcoded"
app:layout_constraintLeft_toLeftOf="@+id/activity_root"
android:layout_marginStart="16dp"
app:layout_constraintTop_toBottomOf="@+id/error"
android:layout_marginTop="8dp"
app:layout_constraintRight_toRightOf="@+id/activity_root"
android:layout_marginEnd="16dp"
app:layout_constraintHorizontal_bias="0.56" />
<EditText
android:id="@+id/password"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="@string/auth.password"
android:imeActionId="@+id/login"
android:imeOptions="actionUnspecified"
android:inputType="textPassword"
android:maxLines="1"
android:drawablePadding="10dp"
android:textSize="@dimen/auth.sizes"
android:paddingTop="20dp"
android:paddingBottom="20dp"
tools:ignore="MissingConstraints,RtlHardcoded"
app:layout_constraintLeft_toLeftOf="@+id/email"
app:layout_constraintTop_toBottomOf="@+id/email"
app:layout_constraintRight_toRightOf="@+id/email"
app:layout_constraintHorizontal_bias="0.0" />
<TextView
android:text="@string/auth.title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="27sp"
android:textColor="@color/greyish_brown"
android:id="@+id/textView"
tools:ignore="MissingConstraints"
app:layout_constraintLeft_toLeftOf="@+id/activity_root"
android:layout_marginStart="16dp"
app:layout_constraintTop_toBottomOf="@+id/logo"
android:layout_marginTop="24dp"
app:layout_constraintRight_toRightOf="@+id/activity_root"
android:layout_marginEnd="16dp" />
<CheckBox
android:text="@string/auth.remember"
android:layout_width="0dp"
android:layout_height="32dp"
android:id="@+id/remember_me"
style="@android:style/Widget.Holo.Light.CompoundButton.CheckBox"
android:checked="true"
android:textSize="@dimen/auth.sizes"
android:textColor="@color/warm_grey"
app:layout_constraintLeft_toLeftOf="@+id/activity_root"
android:layout_marginStart="16dp"
app:layout_constraintTop_toBottomOf="@+id/password"
android:layout_marginTop="27dp"
app:layout_constraintRight_toRightOf="@+id/activity_root"
android:layout_marginEnd="16dp"
app:layout_constraintHorizontal_bias="0.0" />
<Button
android:text="@string/auth.submit"
android:layout_width="152dp"
android:layout_height="51dp"
android:id="@+id/auth_sign_in"
android:background="@drawable/round_button"
tools:ignore="MissingConstraints"
android:textColor="@color/white"
android:textSize="@dimen/auth.sizes"
app:layout_constraintLeft_toLeftOf="@+id/activity_root"
android:layout_marginStart="16dp"
app:layout_constraintTop_toBottomOf="@+id/remember_me"
android:layout_marginTop="46dp"
app:layout_constraintRight_toRightOf="@+id/activity_root"
android:layout_marginEnd="16dp" />
<TextView
android:text="@string/auth.forgot"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/forgot"
android:textColor="@color/pinkish_grey"
app:layout_constraintLeft_toLeftOf="@+id/auth_sign_in"
app:layout_constraintTop_toBottomOf="@+id/auth_sign_in"
android:layout_marginTop="16dp"
app:layout_constraintRight_toRightOf="@+id/auth_sign_in" />
<TextView
android:text="error"
android:layout_width="wrap_content"
android:layout_height="16dp"
android:id="@+id/error"
android:textColor="@color/lipstick"
android:visibility="gone"
app:layout_constraintLeft_toLeftOf="@+id/textView"
app:layout_constraintTop_toBottomOf="@+id/textView"
android:layout_marginTop="16dp"
app:layout_constraintRight_toRightOf="@+id/textView" />
</android.support.constraint.ConstraintLayout>
这里是理解的图片:
我怎样才能理解发生了什么？我以前用过 ViewTreeObserver。
U.P.D.
我的目标是
我希望内容在键盘出现时向上移动，但键盘却覆盖了它。
最佳答案
一切实际上都按照布局构建方式的预期进行——边距是固定的距离，因此您的用户界面对于较小的屏幕来说太高了。您需要修改您的布局以更好地适应小型布局 - 要么将不必要的 View (例如 Logo )标记为消失(ConstraintLayout 会将“消失”的 View 视为折叠到一个点，本质上 - 所以布局仍然有效)，或将某些边距尺寸更改为较小的值。
构建它的常用方法是使用 bias constraints或 guidelines , 而不是硬边距。使用偏差或准则(在百分比模式下)将使您拥有更多类似“ Spring ”的行为，以更好地对尺寸变化使用react。通常，布局会混合硬边距和偏差/准则。
总而言之，您的选择是:
- 更改布局以使用偏差/指南(百分比)约束以获得更具响应性的布局
- 在检测到键盘时将一些 View 标记为
GONE - 动态更改一些其他值(字体大小、边距值...)
- 或者，创建另一个布局文件来处理这种情况
关于android - 窗口软输入模式ConstraintLayout，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38323537/