修改在android 9系统版本以上，读取外部存储的配置文件失败的问题

app/src/main/AndroidManifest.xml

@@ -9,6 +9,8 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
+        <!-- android:requestLegacyExternalStorage="true"> -->
+
         <activity
             android:name=".GT9MainActivity"
             android:configChanges="locale|layoutDirection|keyboard|orientation|keyboardHidden|screenSize">

app/src/main/java/com/example/administrator/wingcool_gt9_apk/Config.java

@@ -1,5 +1,6 @@
 package com.example.administrator.wingcool_gt9_apk;
 
+import android.Manifest;
 import android.app.Activity;
 import android.app.PendingIntent;
 import android.content.Context;
@@ -24,6 +25,7 @@ import android.os.Message;
 import android.os.SystemClock;
 import android.support.annotation.NonNull;
 import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
 import android.support.v4.view.ViewPager;
 import android.support.v7.app.AppCompatActivity;
 import android.text.Editable;
@@ -85,7 +87,7 @@ public class Config extends AppCompatActivity
     private Button mSendCfg;
     private byte[] mBytes = new byte[1024];
     private byte[] mSendData = new byte[1024];
-    private String[] mConfigShow = new String[189];
+    private String[] mConfigShow = new String[512];
 
     private Context mAlertContext;
 
@@ -1277,7 +1279,7 @@ public class Config extends AppCompatActivity
         mCfg8100 = viewcfgram.findViewById(R.id.cfg8100);
     }
     //===============================各view中的元素初始化结束===============================================//
-/*
+    /*
     @Override
     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
         switch (parent.getId()){
@@ -1297,7 +1299,8 @@ public class Config extends AppCompatActivity
     public void onNothingSelected(AdapterView<?> parent) {
 
     }
-*/
+    */
+    /*
     public List<String> loadFile(String fileName){
         List<String> lists = new ArrayList<>();
         try {
@@ -1312,28 +1315,48 @@ public class Config extends AppCompatActivity
                     lists.add(line);
                 }
                 instream.close();
-                //editdetail.setText(buffreader.toString()); //buffer.toString())就是读出的内容字符
-                //mShow.setText(inputreader.toString());
+                edit_search.setText(buffreader.toString()); //buffer.toString())就是读出的内容字符
             }
         } catch (Exception e) {
-            //Log.e(TAG, "****Load " + fileName + " Error****");
+            edit_search.setText(getResources().getString(R.string.invalidfile));
         }
         return lists;
     }
+    */
 
     protected void onActivityResult ( int requestCode, int resultCode, Intent data){
         if (resultCode == Activity.RESULT_OK) {
             if (requestCode == 1) {
-                Uri uri = data.getData();
-                //Toast.makeText(this, "文件路径：" + uri.getPath().toString(), Toast.LENGTH_SHORT).show();
-                edit_search.setText(uri.getPath().toString());
-                //loadFile(uri.getPath().toString());
-                ActivityCompat.requestPermissions(  Config.this, new String[]{android
-                        .Manifest.permission.WRITE_EXTERNAL_STORAGE}, 2);
+
+                int permission_write = ContextCompat.checkSelfPermission(Config.this, Manifest.permission.WRITE_EXTERNAL_STORAGE);
+                int permission_read = ContextCompat.checkSelfPermission(Config.this, Manifest.permission.READ_EXTERNAL_STORAGE);
+
+                if ((permission_write != PackageManager.PERMISSION_GRANTED)
+                    ||(permission_read != PackageManager.PERMISSION_GRANTED))
+                {
+
+                    ActivityCompat.requestPermissions(Config.this, new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE,
+                            android.Manifest.permission.READ_EXTERNAL_STORAGE}, 3);
+                }
 
                 StringBuffer buffer = new StringBuffer();
                 try {
-                    FileInputStream fis = new FileInputStream(uri.getPath().toString());
+
+                    File dir = Environment.getExternalStorageDirectory();
+                    //Uri uri = data.getData();
+
+                    edit_search.setText(dir.getPath() + "/GT9110H_wingcool_config.cfg");
+
+                    //File dir = Environment.getExternalStorageDirectory();
+                    File dataFile = new File(dir.getPath(),"GT9110H_wingcool_config.cfg");
+                    FileInputStream fis = new FileInputStream(dataFile);
+                    //byte[] bytes = new byte[fis.available()];
+                    //fis.read(bytes);
+                    //fis.close();
+                    //String str = new String(bytes,"utf-8");
+                    //edit_search.setText(str);
+
+                    //FileInputStream fis = new FileInputStream(uri.getPath().toString());
                     InputStreamReader isr = new InputStreamReader(fis,"UTF-8");//文件编码Unicode,UTF-8,ASCII,GB2312,Big5
                     Reader in = new BufferedReader(isr);
                     int ch;
@@ -1744,26 +1767,45 @@ public class Config extends AppCompatActivity
                     edit_search.setText(getResources().getString(R.string.invalidfile));
                 }
 
-                /*
+    /*
+                Uri uri = data.getData();
                 File file = new File(uri.getPath());
+
+                edit_search.setText(uri.getPath().toString());
+                //loadFile(uri.getPath().toString());
+                ActivityCompat.requestPermissions(  Config.this, new String[]{android
+                        .Manifest.permission.WRITE_EXTERNAL_STORAGE}, 2);
+
+
                 String str = null;
                 try {
                     InputStream is = new FileInputStream(file);
                     InputStreamReader input = new InputStreamReader(is, "UTF-8");
                     BufferedReader reader = new BufferedReader(input);
                     while ((str = reader.readLine()) != null) {
-                        editdetail.setText(str);
-                        //editdetail.append("\n");
+                        edit_search.setText(str);
                     }
 
                 } catch (FileNotFoundException e) {
                     // TODO Auto-generated catch block
-                    e.printStackTrace();
+                    //e.printStackTrace();
+                    edit_search.setText(getResources().getString(R.string.invalidfile));
                 } catch (IOException e) {
                     // TODO Auto-generated catch block
                     e.printStackTrace();
                 }
-                */
+    */
+    /*
+                Uri uri = data.getData();
+                File file = new File(uri.getPath());
+
+                edit_search.setText(uri.getPath().toString());
+
+                ActivityCompat.requestPermissions(  Config.this, new String[]{android
+                        .Manifest.permission.WRITE_EXTERNAL_STORAGE}, 2);
+
+                loadFile(uri.getPath().toString());
+    */
             }
         }
 
@@ -3992,7 +4034,18 @@ public class Config extends AppCompatActivity
                     }
                 }
                 break;
+
+            case 3:
+                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
+                    //权限已成功申请
+                }else{
+                    //用户拒绝授权
+                    Toast.makeText(this,"无法获取SD卡读写权限", Toast.LENGTH_SHORT).show();
+                    finish();
+                }
+                break;
             default:
+                super.onRequestPermissionsResult(requestCode, permissions, grantResults);
                 break;
         }
     }

app/src/main/res/values-en/strings.xml

@@ -100,7 +100,7 @@
     <string name="companyaddr">Address:Room 2008, Chuangxingda Business Building, No.36 Liuxian 3rd Road, Baoan District, Shenzhen</string>
     <string name="telephonenum">Telephone:186 8896 1937</string>
     <string name="emailaddr">Email:max@wingcool.cn</string>
-    <string name="version">APK Version:v1.1.3_20210928-Release Version</string>
+    <string name="version">APK Version:v1.1.3_20210930-Release Version</string>
 
     <!-- other -->
     <string name="app_name">WingCoolAPK</string>

app/src/main/res/values/strings.xml

@@ -100,7 +100,7 @@
     <string name="companyaddr">地址：深圳市宝安区留仙三路 36 号创兴达商务大厦 2008 室</string>
     <string name="telephonenum">电话：186 8896 1937</string>
     <string name="emailaddr">邮箱：max@wingcool.cn</string>
-    <string name="version">APK版本：v1.1.3_20210928-发布版本</string>
+    <string name="version">APK版本：v1.1.3_20210930-发布版本</string>
 
     <!-- other -->
     <string name="app_name">WingCoolAPK</string>