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Add screen for turning TalkBack on and off and remove intent to launch TB

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tutorial from SUW. Also fix how Fragments are displayed (Fragment Views
were being inflated incorrectly causing bugs like the one where TB would
still see the hub elements on child screens) and  remove ripple from 
non-selectable text.
Bug: 27203716
Bug: 27218687
Bug: 27066012
Bug: 27587193

Change-Id: I4c6724b3ff6d6a7fca3d0f419a5e1c82ee1071d5
This commit is contained in:
Anna Galusza
2016-03-04 18:41:35 -08:00
parent e263401610
commit 2f1c11314b
4 changed files with 87 additions and 114 deletions
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137
src/com/android/settings/accessibility/AccessibilitySettingsForSetupWizard.java
View File

@@ -17,18 +17,14 @@
package com.android.settings.accessibility;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ServiceInfo;
import android.content.res.Resources;
import android.os.Bundle;
import android.os.Handler;
import android.provider.Settings;
import android.support.v7.preference.Preference;
import android.util.Log;
import android.text.TextUtils;
import android.view.accessibility.AccessibilityManager;
import com.android.internal.logging.MetricsProto;
@@ -49,24 +45,12 @@ public class AccessibilitySettingsForSetupWizard extends SettingsPreferenceFragm
// Preferences.
private static final String DISPLAY_MAGNIFICATION_PREFERENCE =
"screen_magnification_preference";
private static final String SCREEN_READER_PREFERENCE = "talkback_preference";
private static final String SCREEN_READER_PREFERENCE = "screen_reader_preference";
private static final String FONT_SIZE_PREFERENCE = "font_size_preference";
// Time needed to let Talkback initialize its self before launching the tutorial.
private static final long SCREEN_READER_INITIALIZATION_DELAY_MS = 3000;
private String mTalkbackPackage;
// Preference controls.
private Preference mDisplayMagnificationPreference;
private Preference mTalkbackPreference;
private Runnable mStartTalkbackRunnable = new Runnable() {
@Override
public void run() {
launchTalkbackTutorial();
}
};
private Preference mScreenReaderPreference;
@Override
protected int getMetricsCategory() {
@@ -79,7 +63,13 @@ public class AccessibilitySettingsForSetupWizard extends SettingsPreferenceFragm
addPreferencesFromResource(R.xml.accessibility_settings_for_setup_wizard);
mDisplayMagnificationPreference = findPreference(DISPLAY_MAGNIFICATION_PREFERENCE);
mTalkbackPreference = findPreference(SCREEN_READER_PREFERENCE);
mScreenReaderPreference = findPreference(SCREEN_READER_PREFERENCE);
}
@Override
public void onResume() {
super.onResume();
updateScreenReaderPreference();
}
@Override
@@ -93,18 +83,6 @@ public class AccessibilitySettingsForSetupWizard extends SettingsPreferenceFragm
return false;
}
private void launchTalkbackTutorial() {
try {
Intent intent = new Intent(Settings.ACTION_SCREEN_READER_TUTORIAL);
intent.setPackage(mTalkbackPackage);
startActivity(intent);
} catch (ActivityNotFoundException e) {
// This can happen if either the build is misconfigued or an OEM removes the intent
// filter for the Talkback tutorial from their implementation of Talkback.
Log.e(TAG, "Can't find Talkback Tutorial: " + Settings.ACTION_SCREEN_READER_TUTORIAL);
}
}
@Override
public boolean onPreferenceTreeClick(Preference preference) {
if (mDisplayMagnificationPreference == preference) {
@@ -116,58 +94,53 @@ public class AccessibilitySettingsForSetupWizard extends SettingsPreferenceFragm
extras.putBoolean(AccessibilitySettings.EXTRA_CHECKED,
Settings.Secure.getInt(getContentResolver(),
Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED, 0) == 1);
} else if (mTalkbackPreference == preference) {
// Enable Talkback if disabled. The tutorial will automatically start when Talkback is
// first activated.
final ContentResolver resolver = getContentResolver();
final int accessibilityEnabled =
Settings.Secure.getInt(resolver, Settings.Secure.ACCESSIBILITY_ENABLED, 0);
if (accessibilityEnabled == 0) {
// Find the first installed screen reader.
String serviceToEnable = null;
final AccessibilityManager manager =
getActivity().getSystemService(AccessibilityManager.class);
final List<AccessibilityServiceInfo> accessibilityServices =
manager.getInstalledAccessibilityServiceList();
for (AccessibilityServiceInfo accessibilityService : accessibilityServices) {
if ((accessibilityService.feedbackType
& AccessibilityServiceInfo.FEEDBACK_SPOKEN) != 0) {
final ServiceInfo serviceInfo =
accessibilityService.getResolveInfo().serviceInfo;
mTalkbackPackage = serviceInfo.packageName;
final ComponentName componentName =
new ComponentName(serviceInfo.packageName, serviceInfo.name);
serviceToEnable = componentName.flattenToString();
break;
}
}
// Enable all accessibility services with spoken feedback type.
Settings.Secure.putString(resolver, Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES,
serviceToEnable);
// Allow the services we just enabled to toggle touch exploration.
Settings.Secure.putString(resolver,
Settings.Secure.TOUCH_EXPLORATION_GRANTED_ACCESSIBILITY_SERVICES,
serviceToEnable);
// Enable touch exploration.
Settings.Secure.putInt(resolver, Settings.Secure.TOUCH_EXPLORATION_ENABLED, 1);
// Turn on accessibility mode last, since enabling accessibility with no
// services has no effect.
Settings.Secure.putInt(resolver, Settings.Secure.ACCESSIBILITY_ENABLED, 1);
// Since Talkback will display an error message if it's not active when the Tutorial
// is launched, launch Talkbck Tutorial with a delay.
new Handler().postDelayed(mStartTalkbackRunnable,
SCREEN_READER_INITIALIZATION_DELAY_MS);
} else {
launchTalkbackTutorial();
}
}
return super.onPreferenceTreeClick(preference);
}
private AccessibilityServiceInfo findFirstServiceWithSpokenFeedback() {
final AccessibilityManager manager =
getActivity().getSystemService(AccessibilityManager.class);
final List<AccessibilityServiceInfo> accessibilityServices =
manager.getInstalledAccessibilityServiceList();
for (AccessibilityServiceInfo info : accessibilityServices) {
if ((info.feedbackType & AccessibilityServiceInfo.FEEDBACK_SPOKEN) != 0) {
return info;
}
}
return null;
}
private void updateScreenReaderPreference() {
// Find a screen reader.
AccessibilityServiceInfo info = findFirstServiceWithSpokenFeedback();
if (info == null) {
mScreenReaderPreference.setEnabled(false);
} else {
mScreenReaderPreference.setEnabled(true);
}
ServiceInfo serviceInfo = info.getResolveInfo().serviceInfo;
String title = info.getResolveInfo().loadLabel(getPackageManager()).toString();
mScreenReaderPreference.setTitle(title);
ComponentName componentName = new ComponentName(serviceInfo.packageName, serviceInfo.name);
mScreenReaderPreference.setKey(componentName.flattenToString());
// Update the extras.
Bundle extras = mScreenReaderPreference.getExtras();
extras.putParcelable(AccessibilitySettings.EXTRA_COMPONENT_NAME, componentName);
extras.putString(AccessibilitySettings.EXTRA_PREFERENCE_KEY,
mScreenReaderPreference.getKey());
extras.putString(AccessibilitySettings.EXTRA_TITLE, title);
String description = info.loadDescription(getPackageManager());
if (TextUtils.isEmpty(description)) {
description = getString(R.string.accessibility_service_default_description);
}
extras.putString(AccessibilitySettings.EXTRA_SUMMARY, description);
}
}