Added Request permissions

Author: sowmen

app/src/main/java/com/example/chatfull/ChatActivity.java

@@ -1,14 +1,17 @@
 package com.example.chatfull;
 
+import android.Manifest;
 import android.app.DownloadManager;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.content.res.TypedArray;
 import android.database.Cursor;
 import android.graphics.Color;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.Environment;
 import android.os.Handler;
@@ -29,6 +32,7 @@
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
+import androidx.core.app.ActivityCompat;
 
 import com.bumptech.glide.Glide;
 import com.flask.colorpicker.ColorPickerView;
@@ -59,6 +63,7 @@ public class ChatActivity extends AppCompatActivity
  private static final int PICK_FILE_REQUEST = 1;
  private static final int PICK_IMAGE_REQUEST = 2;
  private static final byte CONTENT_TYPE_FILE = 1;
+ private static final int REQUEST_WRITE_EXTERNAL_STORAGE = 200;
  private static String PREFERENCE_FILE_KEY;
  private final static String SHARED_PREFERENCES_KEY_MESSAGE_LIST = "User_Info_List";
  SharedPreferences sharedPref;
@@ -90,6 +95,7 @@ public class ChatActivity extends AppCompatActivity
  protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_chat_alternate);
+ isStoragePermissionGranted();
 
  user = (User) getIntent().getSerializableExtra("user");
 
@@ -164,6 +170,29 @@ public void loadImage(ImageView imageView, @Nullable String url, @Nullable Objec
  }
  }
 
+ public boolean isStoragePermissionGranted() {
+ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+ if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
+ == PackageManager.PERMISSION_GRANTED) {
+ return true;
+ } else {
+ ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_WRITE_EXTERNAL_STORAGE );
+ return false;
+ }
+ }
+ else { //permission is automatically granted on sdk<23 upon installation
+ return true;
+ }
+ }
+
+ @Override
+ public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
+ super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+ if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
+ //resume tasks needing this permission
+ }
+ }
+
  private void setClipboard(Context context, String text) {
  if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.HONEYCOMB) {
  android.text.ClipboardManager clipboard = (android.text.ClipboardManager) context.getSystemService(Context.CLIPBOARD_SERVICE);