TV uygulamalarında TalkBack'i destekleme
Koleksiyonlar ile düzeninizi koruyun
İçeriği tercihlerinize göre kaydedin ve kategorilere ayırın.
TV uygulamalarının bazen yalnızca
Uygulamayı kullanmak için TalkBack. Bu tarayıcılar için daha iyi bir TalkBack deneyimi
kullanıyorsanız, bu kılavuzdaki her bir bölümü inceleyin ve
Gerekirse uygulamada kullanın. Uygulamanız özel görünümler kullanıyorsa ayrıca
Özelleştirilebilir erişilebilirlik özelliklerinin nasıl destekleneceğini açıklayan ilgili kılavuzda
görüntüleme.
İç içe görünümleri işleme
İç içe görünümlerde TalkBack kullanıcıları arasında gezinmek zor olabilir. Mümkün olduğunda
TalkBack tarafından odaklanılabilen üst veya alt görünüme gidin (ikisini birden değil).
Bir görünümü TalkBack ile odaklanılabilir hale getirmek için focusable
ve
focusableInTouchMode
özelliğini true
ile ilişkilendirin. Bu adım,
Bazı TV cihazları, TalkBack etkin durumdayken dokunma moduna girebilir ve bu moddan çıkabilir.
Bir görünümü odaklanılamaz hale getirmek için focusable
özelliğini false
olarak değiştirin. Ancak görüntüleme eyleme dönüştürülebiliyorsa (yani,
karşılık gelen AccessibilityNodeInfo
ACTION_CLICK
içeriyor)
odaklanılabilir olmalıdır.
İşlemler için açıklamaları değiştirme
Varsayılan olarak TalkBack, "Etkinleştirmek için seç düğmesine basın" komutunu duyurur dönüşüm sayısını artırabilirsiniz.
Bazı işlemler için "etkinleştir" terimi iyi bir açıklama olmayabilir. Alıcı:
daha doğru bir açıklama sağlarsanız bunu değiştirebilirsiniz:
Kotlin
findViewById<View>(R.id.custom_actionable_view).accessibilityDelegate = object : View.AccessibilityDelegate() {
override fun onInitializeAccessibilityNodeInfo(host: View, info: AccessibilityNodeInfo) {
super.onInitializeAccessibilityNodeInfo(host, info)
info.addAction(
AccessibilityAction(
AccessibilityAction.ACTION_CLICK.id,
getString(R.string.custom_label)
)
)
}
}
Java
findViewById(R.id.custom_actionable_view).setAccessibilityDelegate(new AccessibilityDelegate() {
@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(host, info);
AccessibilityAction action = new AccessibilityAction(
AccessibilityAction.ACTION_CLICK.getId(), getString(R.string.custom_label));
info.addAction(action);
}
});
Kaydırma çubukları için destek eklendi
TV'de TalkBack, kaydırma çubukları için özel destek sunar. Kaydırma çubuğu modunu etkinleştirmek için
RangeInfo
nesnesiyle birlikte bir görünüme ACTION_SET_PROGRESS
.
Kullanıcı, TV uzaktan kumandasının orta düğmesine basarak kaydırma çubuğu moduna girer.
Bu modda, ok düğmeleri ACTION_SCROLL_FORWARD
ve
ACTION_SCROLL_BACKWARD
erişilebilirlik işlemleri.
Aşağıdaki örnekte 1 ile 10 arasındaki düzeylerde bir ses kaydırma çubuğu uygulanmıştır:
Kotlin
/**
* This example only provides slider functionality for TalkBack users. Additional logic should
* be added for other users. Such logic may reuse the increase and decrease methods.
*/
class VolumeSlider(context: Context?, attrs: AttributeSet?) : LinearLayout(context, attrs) {
private val min = 1
private val max = 10
private var current = 5
private var textView: TextView? = null
init {
isFocusable = true
isFocusableInTouchMode = true
val rangeInfo =
AccessibilityNodeInfo.RangeInfo(
AccessibilityNodeInfo.RangeInfo.RANGE_TYPE_INT,
min.toFloat(),
max.toFloat(),
current.toFloat()
)
accessibilityDelegate =
object : AccessibilityDelegate() {
override fun onInitializeAccessibilityNodeInfo(host: View, info: AccessibilityNodeInfo) {
super.onInitializeAccessibilityNodeInfo(host, info)
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SET_PROGRESS)
info.rangeInfo = rangeInfo
}
override fun performAccessibilityAction(host: View, action: Int, args: Bundle?): Boolean {
if (action == AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD.id) {
increase()
return true
}
if (action == AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD.id) {
decrease()
return true
}
return super.performAccessibilityAction(host, action, args)
}
}
}
override fun onFinishInflate() {
super.onFinishInflate()
textView = findViewById(R.id.text)
textView!!.text = context.getString(R.string.level, current)
}
private fun increase() {
update((current + 1).coerceAtMost(max))
}
private fun decrease() {
update((current - 1).coerceAtLeast(min))
}
private fun update(newLevel: Int) {
if (textView == null) {
return
}
val newText = context.getString(R.string.level, newLevel)
// Update the user interface with the new volume.
textView!!.text = newText
// Announce the new volume.
announceForAccessibility(newText)
current = newLevel
}
}
Java
/**
* This example only provides slider functionality for TalkBack users. Additional logic should
* be added for other users. Such logic can reuse the increase and decrease methods.
*/
public class VolumeSlider extends LinearLayout {
private final int min = 1;
private final int max = 10;
private int current = 5;
private TextView textView;
public VolumeSlider(Context context, AttributeSet attrs) {
super(context, attrs);
setFocusable(true);
setFocusableInTouchMode(true);
RangeInfo rangeInfo = new RangeInfo(RangeInfo.RANGE_TYPE_INT, min, max, current);
setAccessibilityDelegate(
new AccessibilityDelegate() {
@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(host, info);
info.addAction(AccessibilityAction.ACTION_SET_PROGRESS);
info.setRangeInfo(rangeInfo);
}
@Override
public boolean performAccessibilityAction(View host, int action, Bundle args) {
if (action == AccessibilityAction.ACTION_SCROLL_FORWARD.getId()) {
increase();
return true;
}
if (action == AccessibilityAction.ACTION_SCROLL_BACKWARD.getId()) {
decrease();
return true;
}
return super.performAccessibilityAction(host, action, args);
}
});
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
textView = findViewById(R.id.text);
textView.setText(getContext().getString(R.string.level, current));
}
private void increase() {
update(Math.min(current + 1, max));
}
private void decrease() {
update(Math.max(current - 1, min));
}
private void update(int newLevel) {
if (textView == null) {
return;
}
String newText = getContext().getString(R.string.level, newLevel);
// Update the user interface with the new volume.
textView.setText(newText);
// Announce the new volume.
announceForAccessibility(newText);
current = newLevel;
}
}
Bu sayfadaki içerik ve kod örnekleri, İçerik Lisansı sayfasında açıklanan lisanslara tabidir. Java ve OpenJDK, Oracle ve/veya satış ortaklarının tescilli ticari markasıdır.
Son güncelleme tarihi: 2025-07-27 UTC.
[null,null,["Son güncelleme tarihi: 2025-07-27 UTC."],[],[],null,["# Support TalkBack in TV apps\n\nTV apps sometimes have use cases that make it difficult for users who rely on\n[TalkBack](/guide/topics/ui/accessibility/testing#talkback) to use the app. To provide a better TalkBack experience for these\nusers, review each of the sections in this guide and implement changes in your\napp where necessary. If your app uses custom views, you should also refer to the\n[corresponding guide](/training/tv/accessibility/custom-views) that describes how to support accessibility with custom\nviews.\n\nHandle nested views\n-------------------\n\nNested views can be hard for TalkBack users to navigate. Whenever possible, make\neither the parent or the child view focusable by TalkBack, but not both.\n\nTo make a view focusable by TalkBack, set the [`focusable`](/reference/android/view/View#attr_android:focusable) and the\n[`focusableInTouchMode`](/reference/android/view/View#attr_android:focusableInTouchMode) attribute to `true`. This step is necessary because\nsome TV devices might enter and exit touch mode while TalkBack is active.\n\nTo make a view non-focusable, it is sufficient to set the [`focusable`](/reference/android/view/View#attr_android:focusable)\nattribute to `false`. However, if the view is actionable (that is, its\ncorresponding `AccessibilityNodeInfo` has [`ACTION_CLICK`](/reference/android/view/accessibility/AccessibilityNodeInfo.AccessibilityAction#ACTION_CLICK)), it might still\nbe focusable.\n\nChange descriptions for Actions\n-------------------------------\n\nBy default, TalkBack announces \"Press select to activate\" for actionable views.\nFor some actions, the term \"activate\" might not be a good description. To\nprovide a more accurate description, you can change it: \n\n### Kotlin\n\n```kotlin\nfindViewById\u003cView\u003e(R.id.custom_actionable_view).accessibilityDelegate = object : View.AccessibilityDelegate() {\n override fun onInitializeAccessibilityNodeInfo(host: View, info: AccessibilityNodeInfo) {\n super.onInitializeAccessibilityNodeInfo(host, info)\n info.addAction(\n AccessibilityAction(\n AccessibilityAction.ACTION_CLICK.id,\n getString(R.string.custom_label)\n )\n )\n }\n}\n```\n\n### Java\n\n```java\nfindViewById(R.id.custom_actionable_view).setAccessibilityDelegate(new AccessibilityDelegate() {\n @Override\n public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {\n super.onInitializeAccessibilityNodeInfo(host, info);\n AccessibilityAction action = new AccessibilityAction(\n AccessibilityAction.ACTION_CLICK.getId(), getString(R.string.custom_label));\n info.addAction(action);\n }\n});\n```\n\nAdd support for sliders\n-----------------------\n\nTalkBack on TV has special support for sliders. To enable slider mode, add\n[`ACTION_SET_PROGRESS`](/reference/android/view/accessibility/AccessibilityNodeInfo.AccessibilityAction#ACTION_SET_PROGRESS) to a view together with a [`RangeInfo`](/reference/android/view/accessibility/AccessibilityNodeInfo.RangeInfo) object.\n\nThe user enters the slider mode by pressing the center button of the TV remote.\nIn this mode, the arrow buttons generate [`ACTION_SCROLL_FORWARD`](/reference/android/view/accessibility/AccessibilityNodeInfo.AccessibilityAction#ACTION_SCROLL_FORWARD) and\n[`ACTION_SCROLL_BACKWARD`](/reference/android/view/accessibility/AccessibilityNodeInfo.AccessibilityAction#ACTION_SCROLL_BACKWARD) accessibility actions.\n\nThe following example implements a volume slider with levels from 1 to 10: \n\n### Kotlin\n\n```kotlin\n/**\n * This example only provides slider functionality for TalkBack users. Additional logic should\n * be added for other users. Such logic may reuse the increase and decrease methods.\n */\nclass VolumeSlider(context: Context?, attrs: AttributeSet?) : LinearLayout(context, attrs) {\n private val min = 1\n private val max = 10\n private var current = 5\n private var textView: TextView? = null\n\n init {\n isFocusable = true\n isFocusableInTouchMode = true\n val rangeInfo =\n AccessibilityNodeInfo.RangeInfo(\n AccessibilityNodeInfo.RangeInfo.RANGE_TYPE_INT,\n min.toFloat(),\n max.toFloat(),\n current.toFloat()\n )\n accessibilityDelegate =\n object : AccessibilityDelegate() {\n override fun onInitializeAccessibilityNodeInfo(host: View, info: AccessibilityNodeInfo) {\n super.onInitializeAccessibilityNodeInfo(host, info)\n info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SET_PROGRESS)\n info.rangeInfo = rangeInfo\n }\n\n override fun performAccessibilityAction(host: View, action: Int, args: Bundle?): Boolean {\n if (action == AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD.id) {\n increase()\n return true\n }\n if (action == AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD.id) {\n decrease()\n return true\n }\n return super.performAccessibilityAction(host, action, args)\n }\n }\n }\n\n override fun onFinishInflate() {\n super.onFinishInflate()\n textView = findViewById(R.id.text)\n textView!!.text = context.getString(R.string.level, current)\n }\n\n private fun increase() {\n update((current + 1).coerceAtMost(max))\n }\n\n private fun decrease() {\n update((current - 1).coerceAtLeast(min))\n }\n\n private fun update(newLevel: Int) {\n if (textView == null) {\n return\n }\n val newText = context.getString(R.string.level, newLevel)\n // Update the user interface with the new volume.\n textView!!.text = newText\n // Announce the new volume.\n announceForAccessibility(newText)\n current = newLevel\n }\n}\n```\n\n### Java\n\n```java\n/**\n * This example only provides slider functionality for TalkBack users. Additional logic should\n * be added for other users. Such logic can reuse the increase and decrease methods.\n */\npublic class VolumeSlider extends LinearLayout {\n private final int min = 1;\n private final int max = 10;\n private int current = 5;\n private TextView textView;\n\n public VolumeSlider(Context context, AttributeSet attrs) {\n super(context, attrs);\n setFocusable(true);\n setFocusableInTouchMode(true);\n RangeInfo rangeInfo = new RangeInfo(RangeInfo.RANGE_TYPE_INT, min, max, current);\n setAccessibilityDelegate(\n new AccessibilityDelegate() {\n @Override\n public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {\n super.onInitializeAccessibilityNodeInfo(host, info);\n info.addAction(AccessibilityAction.ACTION_SET_PROGRESS);\n info.setRangeInfo(rangeInfo);\n }\n\n @Override\n public boolean performAccessibilityAction(View host, int action, Bundle args) {\n if (action == AccessibilityAction.ACTION_SCROLL_FORWARD.getId()) {\n increase();\n return true;\n }\n if (action == AccessibilityAction.ACTION_SCROLL_BACKWARD.getId()) {\n decrease();\n return true;\n }\n return super.performAccessibilityAction(host, action, args);\n }\n });\n }\n\n @Override\n protected void onFinishInflate() {\n super.onFinishInflate();\n textView = findViewById(R.id.text);\n textView.setText(getContext().getString(R.string.level, current));\n }\n\n private void increase() {\n update(Math.min(current + 1, max));\n }\n\n private void decrease() {\n update(Math.max(current - 1, min));\n }\n\n private void update(int newLevel) {\n if (textView == null) {\n return;\n }\n String newText = getContext().getString(R.string.level, newLevel);\n // Update the user interface with the new volume.\n textView.setText(newText);\n // Announce the new volume.\n announceForAccessibility(newText);\n current = newLevel;\n }\n}\n```"]]