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Removing reflection from AlphabeticIndexCompat

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Bug: 31596662
Change-Id: I23da4a9747daa3cee6cec961fc590d18bf05791a
This commit is contained in:
Sunny Goyal
2016-09-26 16:46:38 -07:00
parent 00341907b7
commit 70fea7877d
1 changed files with 17 additions and 45 deletions
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src/com/android/launcher3/compat/AlphabeticIndexCompat.java
+17 -45
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@@ -1,12 +1,14 @@
package com.android.launcher3.compat;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.Configuration;
import android.icu.text.AlphabeticIndex;
import android.os.Build;
import android.os.LocaleList;
import android.util.Log;
import com.android.launcher3.Utilities;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.Locale;
@@ -157,69 +159,39 @@ public class AlphabeticIndexCompat {
}
/**
* Reflected android.icu.text.AlphabeticIndex implementation, falls back to the base
* alphabetic index.
* Implementation based on {@link AlphabeticIndex}.
*/
@TargetApi(Build.VERSION_CODES.N)
private static class AlphabeticIndexVN extends BaseIndex {
private Object mAlphabeticIndex;
private Method mGetBucketIndexMethod;
private final AlphabeticIndex.ImmutableIndex mAlphabeticIndex;
private Method mGetBucketMethod;
private Method mGetLabelMethod;
public AlphabeticIndexVN(Context context) {
LocaleList locales = context.getResources().getConfiguration().getLocales();
int localeCount = locales.size();
public AlphabeticIndexVN(Context context) throws Exception {
// TODO: Replace this with locale list once available.
Object locales = Configuration.class.getDeclaredMethod("getLocales").invoke(
context.getResources().getConfiguration());
int localeCount = (Integer) locales.getClass().getDeclaredMethod("size").invoke(locales);
Method localeGetter = locales.getClass().getDeclaredMethod("get", int.class);
Locale primaryLocale = localeCount == 0 ? Locale.ENGLISH :
(Locale) localeGetter.invoke(locales, 0);
Class clazz = Class.forName("android.icu.text.AlphabeticIndex");
mAlphabeticIndex = clazz.getConstructor(Locale.class).newInstance(primaryLocale);
Method addLocales = clazz.getDeclaredMethod("addLabels", Locale[].class);
Locale primaryLocale = localeCount == 0 ? Locale.ENGLISH : locales.get(0);
AlphabeticIndex indexBuilder = new AlphabeticIndex(primaryLocale);
for (int i = 1; i < localeCount; i++) {
Locale l = (Locale) localeGetter.invoke(locales, i);
addLocales.invoke(mAlphabeticIndex, new Object[]{ new Locale[] {l}});
indexBuilder.addLabels(locales.get(i));
}
addLocales.invoke(mAlphabeticIndex, new Object[]{ new Locale[] {Locale.ENGLISH}});
indexBuilder.addLabels(Locale.ENGLISH);
mAlphabeticIndex = mAlphabeticIndex.getClass()
.getDeclaredMethod("buildImmutableIndex")
.invoke(mAlphabeticIndex);
mGetBucketIndexMethod = mAlphabeticIndex.getClass().getDeclaredMethod(
"getBucketIndex", CharSequence.class);
mGetBucketMethod = mAlphabeticIndex.getClass().getDeclaredMethod("getBucket", int.class);
mGetLabelMethod = mGetBucketMethod.getReturnType().getDeclaredMethod("getLabel");
mAlphabeticIndex = indexBuilder.buildImmutableIndex();
}
/**
* Returns the index of the bucket in which {@param s} should appear.
*/
protected int getBucketIndex(String s) {
try {
return (Integer) mGetBucketIndexMethod.invoke(mAlphabeticIndex, s);
} catch (Exception e) {
e.printStackTrace();
}
return super.getBucketIndex(s);
return mAlphabeticIndex.getBucketIndex(s);
}
/**
* Returns the label for the bucket at the given index
*/
protected String getBucketLabel(int index) {
try {
return (String) mGetLabelMethod.invoke(
mGetBucketMethod.invoke(mAlphabeticIndex, index));
} catch (Exception e) {
e.printStackTrace();
}
return super.getBucketLabel(index);
return mAlphabeticIndex.getBucket(index).getLabel();
}
}
}