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52 changes: 52 additions & 0 deletions
52
app/src/main/java/com/huanchengfly/tieba/post/components/LinkMovementClickMethod.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package com.huanchengfly.tieba.post.components | ||
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| import android.text.Selection | ||
| import android.text.Spannable | ||
| import android.text.method.LinkMovementMethod | ||
| import android.text.style.ClickableSpan | ||
| import android.view.MotionEvent | ||
| import android.widget.TextView | ||
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| object LinkMovementClickMethod : LinkMovementMethod() { | ||
| private const val CLICK_DELAY = 500L | ||
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| private var lastClickTime: Long = 0 | ||
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| override fun canSelectArbitrarily(): Boolean { | ||
| return false | ||
| } | ||
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| override fun onTouchEvent(widget: TextView, buffer: Spannable, event: MotionEvent): Boolean { | ||
| val action = event.actionMasked | ||
| if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) { | ||
| var x = event.x.toInt() | ||
| var y = event.y.toInt() | ||
| x -= widget.totalPaddingLeft | ||
| y -= widget.totalPaddingTop | ||
| x += widget.scrollX | ||
| y += widget.scrollY | ||
| val layout = widget.layout | ||
| val line = layout.getLineForVertical(y) | ||
| val off = layout.getOffsetForHorizontal(line, x.toFloat()) | ||
| val link = buffer.getSpans(off, off, ClickableSpan::class.java) | ||
| if (link.isNotEmpty()) { | ||
| if (action == MotionEvent.ACTION_UP) { | ||
| link[0].onClick(widget) | ||
| } else { | ||
| Selection.setSelection(buffer, buffer.getSpanStart(link[0]), | ||
| buffer.getSpanEnd(link[0])) | ||
| } | ||
| return true | ||
| } else { | ||
| Selection.removeSelection(buffer) | ||
| } | ||
| } | ||
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| return false | ||
| } | ||
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| override fun initialize(widget: TextView?, text: Spannable?) { | ||
| Selection.removeSelection(text) | ||
| } | ||
| } |
81 changes: 81 additions & 0 deletions
81
app/src/main/java/com/huanchengfly/tieba/post/components/LinkTouchMovementMethod.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| package com.huanchengfly.tieba.post.components; | ||
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| import android.text.Layout; | ||
| import android.text.Selection; | ||
| import android.text.Spannable; | ||
| import android.text.method.LinkMovementMethod; | ||
| import android.text.style.ClickableSpan; | ||
| import android.view.MotionEvent; | ||
| import android.widget.TextView; | ||
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| public class LinkTouchMovementMethod extends LinkMovementMethod { | ||
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| private static LinkTouchMovementMethod sInstance; | ||
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| private ClickableSpan mPressedSpan; | ||
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| @Override | ||
| public boolean onTouchEvent(TextView textView, Spannable spannable, MotionEvent event) { | ||
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| if (event.getAction() == MotionEvent.ACTION_DOWN) { | ||
| mPressedSpan = getPressedSpan(textView, spannable, event); | ||
| if (mPressedSpan != null) { | ||
| Selection.setSelection(spannable, spannable.getSpanStart(mPressedSpan), | ||
| spannable.getSpanEnd(mPressedSpan)); | ||
| } | ||
| } else if (event.getAction() == MotionEvent.ACTION_MOVE) { | ||
| ClickableSpan touchedSpan = getPressedSpan(textView, spannable, event); | ||
| if (mPressedSpan != null && touchedSpan != mPressedSpan) { | ||
| mPressedSpan = null; | ||
| Selection.removeSelection(spannable); | ||
| } | ||
| } else { | ||
| if (mPressedSpan != null) { | ||
| super.onTouchEvent(textView, spannable, event); | ||
| } | ||
| mPressedSpan = null; | ||
| Selection.removeSelection(spannable); | ||
| } | ||
| return mPressedSpan != null; | ||
| } | ||
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| /** | ||
| * Copy from: | ||
| * http://stackoverflow.com/questions/20856105/change-the-text-color-of-a-single-clickablespan-when-pressed-without-affecting-o | ||
| * By: | ||
| * Steven Meliopoulos | ||
| */ | ||
| private ClickableSpan getPressedSpan(TextView textView, Spannable spannable, MotionEvent event) { | ||
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| int x = (int) event.getX(); | ||
| int y = (int) event.getY(); | ||
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| x -= textView.getTotalPaddingLeft(); | ||
| y -= textView.getTotalPaddingTop(); | ||
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| x += textView.getScrollX(); | ||
| y += textView.getScrollY(); | ||
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| Layout layout = textView.getLayout(); | ||
| int line = layout.getLineForVertical(y); | ||
| int off = layout.getOffsetForHorizontal(line, x); | ||
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| ClickableSpan[] link = spannable.getSpans(off, off, ClickableSpan.class); | ||
| ClickableSpan touchedSpan = null; | ||
| if (link.length > 0) { | ||
| touchedSpan = link[0]; | ||
| } | ||
| return touchedSpan; | ||
| } | ||
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| public boolean isPressedSpan() { | ||
| return mPressedSpan != null; | ||
| } | ||
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| public static LinkTouchMovementMethod getInstance() { | ||
| if (sInstance == null) { | ||
| sInstance = new LinkTouchMovementMethod(); | ||
| } | ||
| return sInstance; | ||
| } | ||
| } |
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