用反射替換SystemProperties

Author: xhuayan

printlibrary/src/main/java/android/os/SystemProperties.java

@@ -7,7 +7,6 @@
 import android.os.IInterface;
 import android.os.Parcel;
 import android.os.RemoteException;
-import android.os.SystemProperties;
 
 import java.util.List;
 import java.util.Locale;
@@ -2569,7 +2568,7 @@ public static class Proxy implements SunmiPrinterService {
             }
 
             private void setTable() {
-                String model = SystemProperties.get("ro.sunmi.hardware").toUpperCase(Locale.ENGLISH);
+                String model = Utils.getSystemProperty("ro.sunmi.hardware").toUpperCase(Locale.ENGLISH);
                 if(model.contains("V2") || model.contains("P2") || model.contains("P1")
                         || model.contains("V1S") || "QBAO_H1".equals(model)){
                     transaction_table = Stub.TRANSCTION_DATASHEET[0];

printlibrary/src/main/java/com/sunmi/peripheral/printer/SunmiPrinterService.java

@@ -1,15 +1,13 @@
 package com.sunmi.peripheral.printer;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.Build;
-import android.os.SystemProperties;
 import android.text.TextUtils;
 import android.util.Log;
 
-import java.io.BufferedReader;
-import java.io.FileReader;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 
@@ -188,28 +186,38 @@ private static String filterModel(String str) {
         return "";
     }
 
-    public static boolean isSPIPrint() {
-        if (TextUtils.equals("M2-202", Build.MODEL)) {
-            return SystemProperties.getBoolean("persist.sys.isSPI", false);
-        } else if (TextUtils.equals("M2-Pro", Build.MODEL)) {
-            return true;
-        }
-        BufferedReader reader;
+    public static String getSystemProperty(String key) {
         try {
-            reader = new BufferedReader(new FileReader("/proc/neostra_hw_info"));
-            String line;
-            while ((line = reader.readLine()) != null) {
-                Log.d("printlibrary", "hasSPI" + line.contains("SPI=ON"));
-                return line.contains("SPI=ON") ? true : false;
-            }
-            reader.close();
-        } catch (Exception e) {
-            // TODO Auto-generated catch block\r
-            e.printStackTrace();
-        }
-        return false;
+            @SuppressLint("PrivateApi")
+            Class<?> clz = Class.forName("android.os.SystemProperties");
+            Method getMethod = clz.getMethod("get", String.class, String.class);
+            return (String) getMethod.invoke(clz, key, "");
+        } catch (Exception e) {/**/}
+        return "";
     }
 
+//    public static boolean isSPIPrint() {
+//        if (TextUtils.equals("M2-202", Build.MODEL)) {
+//            return SystemProperties.getBoolean("persist.sys.isSPI", false);
+//        } else if (TextUtils.equals("M2-Pro", Build.MODEL)) {
+//            return true;
+//        }
+//        BufferedReader reader;
+//        try {
+//            reader = new BufferedReader(new FileReader("/proc/neostra_hw_info"));
+//            String line;
+//            while ((line = reader.readLine()) != null) {
+//                Log.d("printlibrary", "hasSPI" + line.contains("SPI=ON"));
+//                return line.contains("SPI=ON") ? true : false;
+//            }
+//            reader.close();
+//        } catch (Exception e) {
+//            // TODO Auto-generated catch block\r
+//            e.printStackTrace();
+//        }
+//        return false;
+//    }
+
     //获取电量
     public static int getElect(Context context) {
         IntentFilter filter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);