Update JavaDocs for Alignment, Clickable, Editable and MetricAffecting (58414a48) · Commits · e / os / android_frameworks_base

core/java/android/text/style/AlignmentSpan.java

+53 −12

Original line number	Diff line number	Diff line
		@@ -16,49 +16,90 @@

		package android.text.style;

		import android.annotation.NonNull;
		import android.os.Parcel;
		import android.text.Layout;
		import android.text.ParcelableSpan;
		import android.text.TextUtils;

		/**
		* Span that allows defining the alignment of text at the paragraph level.
		*/
		public interface AlignmentSpan extends ParagraphStyle {

		/**
		* Returns the alignment of the text.
		*
		* @return the text alignment
		*/
		Layout.Alignment getAlignment();

		/**
		* Default implementation of the {@link AlignmentSpan}.
		* <p>
		* For example, a text written in a left to right language, like English, which is by default
		* aligned to the left, can be aligned opposite to the layout direction like this:
		* <pre>{@code SpannableString string = new SpannableString("Text with opposite alignment");
		*string.setSpan(new AlignmentSpan.Standard(Layout.Alignment.ALIGN_OPPOSITE), 0,
		*string.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);}</pre>
		* <img src="{@docRoot}reference/android/images/text/style/ltralignmentspan.png" />
		* <figcaption>Align left to right text opposite to the layout direction.</figcaption>
		* <p>
		* A text written in a right to left language, like Hebrew, which is by default aligned to the
		* right, can be aligned opposite to the layout direction like this:
		* <pre>{@code SpannableString string = new SpannableString("טקסט עם יישור הפוך");
		*string.setSpan(new AlignmentSpan.Standard(Layout.Alignment.ALIGN_OPPOSITE), 0,
		*string.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);}</pre>
		* <img src="{@docRoot}reference/android/images/text/style/rtlalignmentspan.png" />
		* <figcaption>Align right to left text opposite to the layout direction.</figcaption>
		*/
		class Standard implements AlignmentSpan, ParcelableSpan {
		public Standard(Layout.Alignment align) {
		private final Layout.Alignment mAlignment;

		/**
		* Constructs a {@link Standard} from an alignment.
		*/
		public Standard(@NonNull Layout.Alignment align) {
		mAlignment = align;
		}

		public Standard(Parcel src) {
		/**
		* Constructs a {@link Standard} from a parcel.
		*/
		public Standard(@NonNull Parcel src) {
		mAlignment = Layout.Alignment.valueOf(src.readString());
		}

		@Override
		public int getSpanTypeId() {
		return getSpanTypeIdInternal();
		}

		/** @hide */
		@Override
		public int getSpanTypeIdInternal() {
		return TextUtils.ALIGNMENT_SPAN;
		}

		@Override
		public int describeContents() {
		return 0;
		}

		public void writeToParcel(Parcel dest, int flags) {
		@Override
		public void writeToParcel(@NonNull Parcel dest, int flags) {
		writeToParcelInternal(dest, flags);
		}

		/** @hide */
		public void writeToParcelInternal(Parcel dest, int flags) {
		@Override
		public void writeToParcelInternal(@NonNull Parcel dest, int flags) {
		dest.writeString(mAlignment.name());
		}

		@Override
		public Layout.Alignment getAlignment() {
		return mAlignment;
		}

		private final Layout.Alignment mAlignment;
		}
		}

core/java/android/text/style/ClickableSpan.java

+13 −2

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package android.text.style;

		import android.annotation.NonNull;
		import android.text.TextPaint;
		import android.view.View;

		@@ -24,6 +25,16 @@ import android.view.View;
		* with a movement method of LinkMovementMethod, the affected spans of
		* text can be selected. If selected and clicked, the {@link #onClick} method will
		* be called.
		* <p>
		* The text with a <code>ClickableSpan</code> attached will be underlined and the link color will be
		* used as a text color. The default link color is the theme's accent color or
		* <code>android:textColorLink</code> if this attribute is defined in the theme.
		* For example, considering that we have a <code>CustomClickableSpan</code> that extends
		* <code>ClickableSpan</code>, it can be used like this:
		* <pre>{@code SpannableString string = new SpannableString("Text with clickable text");
		*string.setSpan(new CustomClickableSpan(), 10, 19, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);}</pre>
		* <img src="{@docRoot}reference/android/images/text/style/clickablespan.png" />
		* <figcaption>Text with <code>ClickableSpan</code>.</figcaption>
		*/
		public abstract class ClickableSpan extends CharacterStyle implements UpdateAppearance {
		private static int sIdCounter = 0;
		@@ -33,13 +44,13 @@ public abstract class ClickableSpan extends CharacterStyle implements UpdateAppe
		/**
		* Performs the click action associated with this span.
		*/
		public abstract void onClick(View widget);
		public abstract void onClick(@NonNull View widget);

		/**
		* Makes the text underlined and in the link color.
		*/
		@Override
		public void updateDrawState(TextPaint ds) {
		public void updateDrawState(@NonNull TextPaint ds) {
		ds.setColor(ds.linkColor);
		ds.setUnderlineText(true);
		}

core/java/android/text/style/EasyEditSpan.java

+4 −3

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package android.text.style;

		import android.annotation.NonNull;
		import android.app.PendingIntent;
		import android.os.Parcel;
		import android.text.ParcelableSpan;
		@@ -79,7 +80,7 @@ public class EasyEditSpan implements ParcelableSpan {
		/**
		* Constructor called from {@link TextUtils} to restore the span.
		*/
		public EasyEditSpan(Parcel source) {
		public EasyEditSpan(@NonNull Parcel source) {
		mPendingIntent = source.readParcelable(null);
		mDeleteEnabled = (source.readByte() == 1);
		}
		@@ -90,12 +91,12 @@ public class EasyEditSpan implements ParcelableSpan {
		}

		@Override
		public void writeToParcel(Parcel dest, int flags) {
		public void writeToParcel(@NonNull Parcel dest, int flags) {
		writeToParcelInternal(dest, flags);
		}

		/** @hide */
		public void writeToParcelInternal(Parcel dest, int flags) {
		public void writeToParcelInternal(@NonNull Parcel dest, int flags) {
		dest.writeParcelable(mPendingIntent, 0);
		dest.writeByte((byte) (mDeleteEnabled ? 1 : 0));
		}

core/java/android/text/style/MetricAffectingSpan.java

+17 −10

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package android.text.style;

		import android.annotation.NonNull;
		import android.text.TextPaint;

		/**
		@@ -26,7 +27,13 @@ public abstract class MetricAffectingSpan
		extends CharacterStyle
		implements UpdateLayout {

		public abstract void updateMeasureState(TextPaint p);
		/**
		* Classes that extend MetricAffectingSpan implement this method to update the text formatting
		* in a way that can change the width or height of characters.
		*
		* @param textPaint the paint used for drawing the text
		*/
		public abstract void updateMeasureState(@NonNull TextPaint textPaint);

		/**
		* Returns "this" for most MetricAffectingSpans, but for
		@@ -52,7 +59,7 @@ implements UpdateLayout {
		/**
		* Creates a new Passthrough of the specfied MetricAffectingSpan.
		*/
		public Passthrough(MetricAffectingSpan cs) {
		Passthrough(@NonNull MetricAffectingSpan cs) {
		mStyle = cs;
		}

		@@ -60,7 +67,7 @@ implements UpdateLayout {
		* Passes updateDrawState through to the underlying MetricAffectingSpan.
		*/
		@Override
		public void updateDrawState(TextPaint tp) {
		public void updateDrawState(@NonNull TextPaint tp) {
		mStyle.updateDrawState(tp);
		}

		@@ -68,7 +75,7 @@ implements UpdateLayout {
		* Passes updateMeasureState through to the underlying MetricAffectingSpan.
		*/
		@Override
		public void updateMeasureState(TextPaint tp) {
		public void updateMeasureState(@NonNull TextPaint tp) {
		mStyle.updateMeasureState(tp);
		}

docs/html/reference/images/text/style/clickablespan.png

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+11.9 KiB

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