Update gradle, Add demo

Author: BalioFVFX

.idea/codeStyles/Project.xml

@@ -2,6 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.fileexplorer">
 
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"

.idea/vcs.xml

@@ -1,16 +1,62 @@
 package com.example.fileexplorer;
 
+import android.Manifest;
 import android.content.Intent;
-import android.support.v7.app.AppCompatActivity;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
+import android.support.v7.app.AppCompatActivity;
+import android.widget.Toast;
 
 import com.example.simplefileexplorer.SimpleFileExplorerActivity;
 
 public class MainActivity extends AppCompatActivity {
 
+    private final String permission = Manifest.permission.WRITE_EXTERNAL_STORAGE;
+    private final int file_explorer_request_result_code = 22;
+    private final int permissions_request_code = 23;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        if (ContextCompat.checkSelfPermission(this, permission)
+                != PackageManager.PERMISSION_GRANTED) {
+            ActivityCompat.requestPermissions(this,
+                    new String[]{this.permission},
+                    this.permissions_request_code);
+        }
+        else {
+            this.startFileExplorerLibrary();
+        }
+    }
+
+    private void startFileExplorerLibrary(){
+        Intent intent = new Intent(this, SimpleFileExplorerActivity.class);
+        startActivityForResult(intent, file_explorer_request_result_code);
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        if(requestCode == this.permissions_request_code){
+            if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
+                this.startFileExplorerLibrary();
+            }
+            else{
+                Toast.makeText(this, "Permission not granted.", Toast.LENGTH_LONG).show();
+            }
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        if(data != null){
+            String selectedAbsolutePath = data.getStringExtra(SimpleFileExplorerActivity.ON_ACTIVITY_RESULT_KEY);
+            Toast.makeText(this, selectedAbsolutePath, Toast.LENGTH_SHORT).show();
+        }
     }
 }

app/src/main/AndroidManifest.xml

@@ -7,7 +7,7 @@ buildscript {
 
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.4.0'
+        classpath 'com.android.tools.build:gradle:3.5.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

app/src/main/java/com/example/fileexplorer/MainActivity.java

@@ -1,6 +1,6 @@
-#Mon May 06 10:20:29 EEST 2019
+#Sun Oct 13 13:31:45 EEST 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip