Question

我的登录活动中有自定义textinputlayout 同样在自定义textinputlayout布局中我有自定义可清除的edittext。

我无法在登录活动屏幕的预览中看到自定义textinputlayout，但是当我在设备上运行该应用时，会显示该内容。

登录活动的xml

            <com.santsg.paximum.ui.customview.component.SpecialTextInputLayout
                android:id="@+id/userNameEdt"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                app:sethint="@string/user_name"/>

            <com.santsg.paximum.ui.customview.component.SpecialTextInputLayout
                android:id="@+id/passwordEdt"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                app:sethint="@string/password"/>

CustomTextInputLayout

public class SpecialTextInputLayout extends LinearLayout {

ClearableEditText editText;
TextInputLayout layout;
String hint;
public SpecialTextInputLayout(Context context) {
    this(context, null);
}

public SpecialTextInputLayout(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
}

public SpecialTextInputLayout(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs);
    LayoutInflater.from(getContext()).inflate(R.layout.special_edittext_layout, this);
    initResource();

    TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.ClearableEditText, defStyleAttr, 0);
    try {
        hint = ta.getString(R.styleable.ClearableEditText_sethint);
    } finally {
        ta.recycle();
    }

    layout.setHint(hint);
}

private void initResource() {
    editText = findViewById(R.id.specialEdt);
    layout = findViewById(R.id.specialEditLayout);
}

public void setText(String text) {
    editText.setText(text);
}

public String getText() {
    return editText.getText().toString();
}

自定义文字输入布局＆x; xml。

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.design.widget.TextInputLayout
    android:id="@+id/specialEditLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:theme="@style/AppTheme.EditText.Input">

    <com.santsg.paximum.ui.customview.component.ClearableEditText
        android:id="@+id/specialEdt"
        android:layout_width="match_parent"
        android:layout_height="@dimen/clearable_edittext_input_height"/>

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

和可清除的edittext，它位于特殊/自定义文本输入布局中。

ublic class ClearableEditText extends AppCompatEditText implements View.OnTouchListener, View.OnFocusChangeListener, TextWatcher {

private Drawable mClearTextIcon;
private OnFocusChangeListener mOnFocusChangeListener;
private OnTouchListener mOnTouchListener;

public ClearableEditText(final Context context) {
    super(context);
    init(context);
}

public ClearableEditText(final Context context, final AttributeSet attrs) {
    super(context, attrs);
    init(context);
}

public ClearableEditText(final Context context, final AttributeSet attrs, final int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    init(context);
}

@Override
public void setOnFocusChangeListener(final OnFocusChangeListener onFocusChangeListener) {
    mOnFocusChangeListener = onFocusChangeListener;
}

@Override
public void setOnTouchListener(final OnTouchListener onTouchListener) {
    mOnTouchListener = onTouchListener;
}

private void init(final Context context) {
    final Drawable drawable = ContextCompat.getDrawable(context, android.support.v7.appcompat.R.drawable.abc_ic_clear_material);
    final Drawable wrappedDrawable = DrawableCompat.wrap(drawable); //Wrap the drawable so that it can be tinted pre Lollipop
    DrawableCompat.setTint(wrappedDrawable, getCurrentHintTextColor());
    mClearTextIcon = wrappedDrawable;
    mClearTextIcon.setBounds(0, 0, mClearTextIcon.getIntrinsicHeight(), mClearTextIcon.getIntrinsicHeight());
    setClearIconVisible(false);
    super.setOnTouchListener(this);
    super.setOnFocusChangeListener(this);
    addTextChangedListener(this);
}


@Override
public void onFocusChange(final View view, final boolean hasFocus) {
    if (hasFocus) {
        setClearIconVisible(getText().length() > 0);
    } else {
        setClearIconVisible(false);
    }
    if (mOnFocusChangeListener != null) {
        mOnFocusChangeListener.onFocusChange(view, hasFocus);
    }
}

@Override
public boolean onTouch(final View view, final MotionEvent motionEvent) {
    final int x = (int) motionEvent.getX();
    if (mClearTextIcon.isVisible() && x > getWidth() - getPaddingRight() - mClearTextIcon.getIntrinsicWidth()) {
        if (motionEvent.getAction() == MotionEvent.ACTION_UP) {
            setError(null);
            setText("");
        }
        return true;
    }
    return mOnTouchListener != null && mOnTouchListener.onTouch(view, motionEvent);
}

@Override
public final void onTextChanged(final CharSequence s, final int start, final int before, final int count) {
    if (isFocused()) {
        setClearIconVisible(s.length() > 0);
    }
}

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}

@Override
public void afterTextChanged(Editable s) {
}


private void setClearIconVisible(final boolean visible) {
    mClearTextIcon.setVisible(visible, false);
    final Drawable[] compoundDrawables = getCompoundDrawables();
    setCompoundDrawables(
            compoundDrawables[0],
            compoundDrawables[1],
            visible ? mClearTextIcon : null,
            compoundDrawables[3]);
}

Answer 1

Double Shift 可以在Android Studio上进行搜索，然后搜索“插件”。

安装两个布局库并重新启动android studio

自定义TextInputLayout未在预览

1 个答案: