Links to open external applications

app/src/main/AndroidManifest.xml

@@ -16,6 +16,8 @@
         android:name="android.permission.VIBRATE"/>
     <uses-permission
         android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission
+        android:name="android.permission.QUERY_ALL_PACKAGES"/>
 
     <application
         android:label="@string/app_name"

app/src/main/java/com/kunzisoft/keepass/utils/UriUtil.kt

@@ -22,8 +22,10 @@ package com.kunzisoft.keepass.utils
 import android.content.ContentResolver
 import android.content.Context
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Build
+import android.util.Log
 import android.widget.Toast
 import androidx.documentfile.provider.DocumentFile
 import com.kunzisoft.keepass.R
@@ -151,6 +153,24 @@ object UriUtil {
         gotoUrl(context, context.getString(resId))
     }
 
+    fun isExternalAppInstalled(context: Context, packageName: String): Boolean {
+        try {
+            context.applicationContext.packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES)
+            return true
+        } catch (e: Exception) {
+            Log.e(javaClass.simpleName, "App not accessible", e)
+        }
+        return false
+    }
+
+    fun openExternalApp(context: Context, packageName: String) {
+        try {
+            context.startActivity(context.applicationContext.packageManager.getLaunchIntentForPackage(packageName))
+        } catch (e: Exception) {
+            Log.e(javaClass.simpleName, "App cannot be open", e)
+        }
+    }
+
     fun getBinaryDir(context: Context): File {
         return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             context.applicationContext.noBackupFilesDir

app/src/main/java/com/kunzisoft/keepass/view/EntryField.kt

@@ -30,7 +30,8 @@ import android.widget.TextView
 import androidx.annotation.StringRes
 import androidx.core.text.util.LinkifyCompat
 import com.kunzisoft.keepass.R
-import java.util.regex.Pattern
+import com.kunzisoft.keepass.model.EntryInfo.Companion.APPLICATION_ID_FIELD_NAME
+import com.kunzisoft.keepass.utils.UriUtil
 
 class EntryField @JvmOverloads constructor(context: Context,
                                            attrs: AttributeSet? = null,
@@ -101,9 +102,7 @@ class EntryField @JvmOverloads constructor(context: Context,
                 setTextIsSelectable(true)
             }
             applyHiddenStyle(isProtected && !showButtonView.isSelected)
-            if (valueView.autoLinkMask == LINKIFY_MASKS) {
-                linkify()
-            }
+            if (!isProtected) linkify()
         }
     }
 
@@ -113,13 +112,23 @@ class EntryField @JvmOverloads constructor(context: Context,
     }
 
     private fun linkify() {
-        valueView.autoLinkMask = LINKIFY_MASKS
-        LinkifyCompat.addLinks(valueView, LINKIFY_MASKS)
+        when {
+            labelView.text.contains(APPLICATION_ID_FIELD_NAME) -> {
+                val packageName = valueView.text.toString()
+                if (UriUtil.isExternalAppInstalled(context, packageName)) {
+                    valueView.customLink {
+                        UriUtil.openExternalApp(context, packageName)
+                    }
+                }
+            }
+            else -> {
+                LinkifyCompat.addLinks(valueView, Linkify.WEB_URLS or Linkify.EMAIL_ADDRESSES)
+            }
+        }
     }
 
     fun setLinkAll() {
-        valueView.autoLinkMask = LINKIFY_ALL
-        LinkifyCompat.addLinks(valueView, LINKIFY_ALL)
+        LinkifyCompat.addLinks(valueView, Linkify.ALL)
     }
 
     fun activateCopyButton(enable: Boolean) {
@@ -131,8 +140,4 @@ class EntryField @JvmOverloads constructor(context: Context,
         copyButtonView.setOnClickListener(onClickActionListener)
         copyButtonView.visibility = if (onClickActionListener == null) GONE else VISIBLE
     }
-    companion object {
-        private const val LINKIFY_MASKS = Linkify.WEB_URLS or Linkify.EMAIL_ADDRESSES
-        private const val LINKIFY_ALL = Linkify.ALL
-    }
 }

app/src/main/java/com/kunzisoft/keepass/view/ViewUtil.kt

@@ -25,7 +25,13 @@ import android.animation.ValueAnimator
 import android.graphics.Color
 import android.graphics.Paint
 import android.graphics.Typeface
+import android.text.Selection
+import android.text.Spannable
+import android.text.SpannableString
+import android.text.Spanned
+import android.text.method.LinkMovementMethod
 import android.text.method.PasswordTransformationMethod
+import android.text.style.ClickableSpan
 import android.view.View
 import android.view.animation.AccelerateDecelerateInterpolator
 import android.widget.TextView
@@ -68,6 +74,21 @@ fun TextView.strikeOut(strikeOut: Boolean) {
         paintFlags and Paint.STRIKE_THRU_TEXT_FLAG.inv()
 }
 
+fun TextView.customLink(listener: (View) -> Unit) {
+    val spannableString = SpannableString(this.text)
+    val clickableSpan = object : ClickableSpan() {
+        override fun onClick(view: View) {
+            Selection.setSelection((view as TextView).text as Spannable, 0)
+            view.invalidate()
+            listener.invoke(view)
+        }
+    }
+    spannableString.setSpan(clickableSpan, 0, text.length,
+            Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+    this.movementMethod = LinkMovementMethod.getInstance() // without LinkMovementMethod, link can not click
+    this.setText(spannableString, TextView.BufferType.SPANNABLE)
+}
+
 fun Snackbar.asError(): Snackbar {
     this.view.apply {
         setBackgroundColor(Color.RED)