diff options
| -rw-r--r-- | core/java/android/preference/ListPreference.java | 48 | ||||
| -rw-r--r-- | core/tests/coretests/src/android/preference/ListPreferenceTest.java | 45 |
2 files changed, 92 insertions, 1 deletions
diff --git a/core/java/android/preference/ListPreference.java b/core/java/android/preference/ListPreference.java index f842d754cbb6..f44cbe40f7ae 100644 --- a/core/java/android/preference/ListPreference.java +++ b/core/java/android/preference/ListPreference.java @@ -39,6 +39,7 @@ public class ListPreference extends DialogPreference { private CharSequence[] mEntries; private CharSequence[] mEntryValues; private String mValue; + private String mSummary; private int mClickedDialogEntryIndex; public ListPreference(Context context, AttributeSet attrs) { @@ -49,8 +50,16 @@ public class ListPreference extends DialogPreference { mEntries = a.getTextArray(com.android.internal.R.styleable.ListPreference_entries); mEntryValues = a.getTextArray(com.android.internal.R.styleable.ListPreference_entryValues); a.recycle(); + + /* Retrieve the Preference summary attribute since it's private + * in the Preference class. + */ + a = context.obtainStyledAttributes(attrs, + com.android.internal.R.styleable.Preference, 0, 0); + mSummary = a.getString(com.android.internal.R.styleable.Preference_summary); + a.recycle(); } - + public ListPreference(Context context) { this(context, null); } @@ -127,6 +136,43 @@ public class ListPreference extends DialogPreference { } /** + * Returns the summary of this ListPreference. If the summary + * has a {@linkplain java.lang.String#format String formatting} + * marker in it (i.e. "%s" or "%1$s"), then the current entry + * value will be substituted in its place. + * + * @return the summary with appropriate string substitution + */ + @Override + public CharSequence getSummary() { + final CharSequence entry = getEntry(); + if (mSummary == null || entry == null) { + return super.getSummary(); + } else { + return String.format(mSummary, entry); + } + } + + /** + * Sets the summary for this Preference with a CharSequence. + * If the summary has a + * {@linkplain java.lang.String#format String formatting} + * marker in it (i.e. "%s" or "%1$s"), then the current entry + * value will be substituted in its place when it's retrieved. + * + * @param summary The summary for the preference. + */ + @Override + public void setSummary(CharSequence summary) { + super.setSummary(summary); + if (summary == null && mSummary != null) { + mSummary = null; + } else if (summary != null && !summary.equals(mSummary)) { + mSummary = summary.toString(); + } + } + + /** * Sets the value to the given index from the entry values. * * @param index The index of the value to set. diff --git a/core/tests/coretests/src/android/preference/ListPreferenceTest.java b/core/tests/coretests/src/android/preference/ListPreferenceTest.java new file mode 100644 index 000000000000..41f8e03f46ce --- /dev/null +++ b/core/tests/coretests/src/android/preference/ListPreferenceTest.java @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2009 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package android.preference; + +import android.preference.ListPreference; +import android.test.AndroidTestCase; + +public class ListPreferenceTest extends AndroidTestCase { + public void testListPreferenceSummaryFromEntries() { + String[] entries = { "one", "two", "three" }; + String[] entryValues = { "1" , "2", "3" }; + ListPreference lp = new ListPreference(getContext()); + lp.setEntries(entries); + lp.setEntryValues(entryValues); + + lp.setValue(entryValues[1]); + assertTrue(lp.getSummary() == null); + + lp.setSummary("%1$s"); + assertEquals(entries[1], lp.getSummary()); + + lp.setValue(entryValues[2]); + assertEquals(entries[2], lp.getSummary()); + + lp.setSummary(null); + assertTrue(lp.getSummary() == null); + + lp.setSummary("The color is %1$s"); + assertEquals("The color is " + entries[2], lp.getSummary()); + } +} |