Wrap settings management into a Settings class

Until now, the code that needed to read/write the Android settings had
to explicitly open and close a ContentProvider.

Wrap these details into a Settings class.

This paves the way to provide an alternative implementation of settings
read/write for Android >= 12.

PR #2802 <https://github.com/Genymobile/scrcpy/pull/2802>

server/src/main/java/com/genymobile/scrcpy/Settings.java

@@ -0,0 +1,39 @@
+package com.genymobile.scrcpy;
+
+import com.genymobile.scrcpy.wrappers.ContentProvider;
+import com.genymobile.scrcpy.wrappers.ServiceManager;
+
+public class Settings {
+
+    public static final String TABLE_SYSTEM = ContentProvider.TABLE_SYSTEM;
+    public static final String TABLE_SECURE = ContentProvider.TABLE_SECURE;
+    public static final String TABLE_GLOBAL = ContentProvider.TABLE_GLOBAL;
+
+    private final ServiceManager serviceManager;
+
+    public Settings(ServiceManager serviceManager) {
+        this.serviceManager = serviceManager;
+    }
+
+    public String getValue(String table, String key) {
+        try (ContentProvider provider = serviceManager.getActivityManager().createSettingsProvider()) {
+            return provider.getValue(table, key);
+        }
+    }
+
+    public void putValue(String table, String key, String value) {
+        try (ContentProvider provider = serviceManager.getActivityManager().createSettingsProvider()) {
+            provider.putValue(table, key, value);
+        }
+    }
+
+    public String getAndPutValue(String table, String key, String value) {
+        try (ContentProvider provider = serviceManager.getActivityManager().createSettingsProvider()) {
+            String oldValue = provider.getValue(table, key);
+            if (!value.equals(oldValue)) {
+                provider.putValue(table, key, value);
+            }
+            return oldValue;
+        }
+    }
+}