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UPDATE: Add CrossProcessSharedPreferences.getDefault() and deprecate get() with an overload without parameter "mode".

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This commit is contained in:
Oasis 2016-06-27 21:57:59 +08:00
parent 943566dc4f
commit b7606a49c3
1 changed files with 29 additions and 9 deletions
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38
library/src/main/java/com/oasisfeng/android/content/CrossProcessSharedPreferences.java
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@ -4,12 +4,14 @@ import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.ContextWrapper;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Build;
import android.os.Process;
import android.preference.PreferenceManager;
import android.text.TextUtils;
import android.util.Log;
@ -20,6 +22,8 @@ import java.util.Map;
import java.util.Set;
import java.util.WeakHashMap;
import static android.R.attr.mode;
/**
* Make changes of SharedPreferences in one process propagate to all other processes with the same SharedPreferences (only after commit/apply).
*
@ -27,19 +31,34 @@ import java.util.WeakHashMap;
*/
public class CrossProcessSharedPreferences {
static final String KActionSharedPrefsUpdated = "com.oasisfeng.android.content.ACTION_SHARED_PREFS_CHANGED";
static final String KExtraName = "name";
static final String KExtraKey = "key";
static final String KExtraPid = "pid";
private static final String KActionSharedPrefsUpdated = "com.oasisfeng.android.content.ACTION_SHARED_PREFS_CHANGED";
private static final String KExtraName = "name";
private static final String KExtraKey = "key";
private static final String KExtraPid = "pid";
public static SharedPreferences get(final Context context, final String name, final int mode) {
/** Cross process version of {@link Context#getSharedPreferences(String, int)} except for the mode is always {@link Context#MODE_PRIVATE} */
public static SharedPreferences get(final Context context, final String name) {
if (mSingleton == null) synchronized(mLock) {
if (mSingleton == null) mSingleton = new CrossProcessSharedPreferences(context);
}
return mSingleton.getSharedPreferences(context, name, mode);
}
/** Cross process version of {@link PreferenceManager#getDefaultSharedPreferences(Context)} */
public static SharedPreferences getDefault(final Context context) {
return PreferenceManager.getDefaultSharedPreferences(new ContextWrapper(context) {
@Override public SharedPreferences getSharedPreferences(final String name, final int mode) {
return get(context, name);
}
});
}
/** @deprecated mode is not supported any more
* @see #get(Context, String) */
@Deprecated public static SharedPreferences get(final Context context, final String name, final int mode) {
return get(context, name);
}
private SharedPreferencesWrapper getSharedPreferences(final Context context, final String name, final int mode) {
final SharedPreferences prefs = context.getSharedPreferences(name, mode);
if (prefs == null) return null; // Should not happen, but still check for safety (in case of custom implementation)
@ -60,6 +79,7 @@ public class CrossProcessSharedPreferences {
@Override protected void finalize() throws Throwable {
try {
mAppContext.unregisterReceiver(mUpdateReceiver);
} catch (final RuntimeException ignored) {
} finally { super.finalize(); }
}
@ -84,9 +104,9 @@ public class CrossProcessSharedPreferences {
private static CrossProcessSharedPreferences mSingleton;
private static final Object mLock = new Object();
static final String TAG = "MPSharedPrefs";
private static final String TAG = "MPSharedPrefs";
class SharedPreferencesWrapper implements SharedPreferences, OnSharedPreferenceChangeListener {
private class SharedPreferencesWrapper implements SharedPreferences, OnSharedPreferenceChangeListener {
@Override public void registerOnSharedPreferenceChangeListener(final OnSharedPreferenceChangeListener listener) {
synchronized (this) {
@ -119,7 +139,7 @@ public class CrossProcessSharedPreferences {
} finally { super.finalize(); }
}
public SharedPreferencesWrapper(final String name, final SharedPreferences prefs) {
SharedPreferencesWrapper(final String name, final SharedPreferences prefs) {
mName = name;
mDelegate = prefs;
prefs.registerOnSharedPreferenceChangeListener(this);