Logcat activity

app/src/main/AndroidManifest.xml

@@ -53,6 +53,7 @@
         <activity android:name=".file_viewers.AudioPlayer" android:configChanges="screenSize|orientation" />
         <activity android:name=".file_viewers.TextEditor" android:configChanges="screenSize|orientation" />
         <activity android:name=".CameraActivity" android:screenOrientation="nosensor" />
+        <activity android:name=".LogcatActivity"/>
 
         <service android:name=".WiperService" android:exported="false" android:stopWithTask="false"/>
         <service android:name=".file_operations.FileOperationService" android:exported="false"/>

app/src/main/java/sushi/hardcore/droidfs/LogcatActivity.kt

@@ -0,0 +1,88 @@
+package sushi.hardcore.droidfs
+
+import android.net.Uri
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
+import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.lifecycle.lifecycleScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import sushi.hardcore.droidfs.databinding.ActivityLogcatBinding
+import java.io.BufferedReader
+import java.io.BufferedWriter
+import java.io.InputStreamReader
+import java.io.InterruptedIOException
+import java.io.OutputStreamWriter
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+
+class LogcatActivity: BaseActivity() {
+    private lateinit var binding: ActivityLogcatBinding
+    private var process: Process? = null
+    private val dateFormat by lazy {
+        SimpleDateFormat("yyyy-MM-dd_HH:mm:ss", Locale.getDefault())
+    }
+    private val saveAs = registerForActivityResult(ActivityResultContracts.CreateDocument("text/*")) { uri ->
+        uri?.let {
+            saveTo(it)
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityLogcatBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+        title = getString(R.string.logcat_title)
+        supportActionBar?.setDisplayHomeAsUpEnabled(true)
+
+        lifecycleScope.launch(Dispatchers.IO) {
+            try {
+                BufferedReader(InputStreamReader(Runtime.getRuntime().exec("logcat").also {
+                    process = it
+                }.inputStream)).forEachLine {
+                    binding.content.post {
+                        binding.content.append("$it\n")
+                    }
+                }
+            } catch (_: InterruptedIOException) {}
+        }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        process?.destroy()
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.logcat, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        return when (item.itemId) {
+            android.R.id.home -> {
+                finish()
+                true
+            }
+            R.id.save -> {
+                saveAs.launch("DroidFS_${dateFormat.format(Date())}.log")
+                true
+            }
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+
+    private fun saveTo(uri: Uri) {
+        lifecycleScope.launch(Dispatchers.IO) {
+            BufferedWriter(OutputStreamWriter(contentResolver.openOutputStream(uri))).use {
+                it.write(binding.content.text.toString())
+            }
+            launch(Dispatchers.Main) {
+                Toast.makeText(this@LogcatActivity, R.string.logcat_saved, Toast.LENGTH_SHORT).show()
+            }
+        }
+    }
+}

app/src/main/java/sushi/hardcore/droidfs/SettingsActivity.kt

@@ -120,6 +120,10 @@ class SettingsActivity : BaseActivity() {
                     false
                 }
             }
+            findPreference<Preference>("logcat")?.setOnPreferenceClickListener { _ ->
+                startActivity(Intent(requireContext(), LogcatActivity::class.java))
+                true
+            }
         }
     }
 

app/src/main/res/drawable/icon_debug.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="?attr/colorAccent" android:pathData="M5,16c0,3.87 3.13,7 7,7s7,-3.13 7,-7v-4L5,12v4zM16.12,4.37l2.1,-2.1 -0.82,-0.83 -2.3,2.31C14.16,3.28 13.12,3 12,3s-2.16,0.28 -3.09,0.75L6.6,1.44l-0.82,0.83 2.1,2.1C6.14,5.64 5,7.68 5,10v1h14v-1c0,-2.32 -1.14,-4.36 -2.88,-5.63zM9,9c-0.55,0 -1,-0.45 -1,-1s0.45,-1 1,-1 1,0.45 1,1 -0.45,1 -1,1zM15,9c-0.55,0 -1,-0.45 -1,-1s0.45,-1 1,-1 1,0.45 1,1 -0.45,1 -1,1z"/>
+</vector>

app/src/main/res/layout/activity_logcat.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <HorizontalScrollView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:id="@+id/content"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textIsSelectable="true"
+            android:typeface="monospace" />
+
+    </HorizontalScrollView>
+
+</ScrollView>

app/src/main/res/menu/logcat.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/save"
+        app:showAsAction="ifRoom"
+        android:icon="@drawable/icon_save"
+        android:title="@string/save" />
+
+</menu>

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

@@ -276,4 +276,7 @@
     <string name="memfd_create_unsupported">Your current kernel does not support memfd_create(). This feature requires a minimum kernel version of %s.</string>
     <string name="export_method">Export method</string>
     <string name="export_method_summary">File export method. Used for sharing, external opening and accessing exposed files.</string>
+    <string name="debug">Debug</string>
+    <string name="logcat_title">DroidFS Logcat</string>
+    <string name="logcat_saved">Logcat saved</string>
 </resources>

app/src/main/res/xml/root_preferences.xml

@@ -93,6 +93,16 @@
 
     </PreferenceCategory>
 
+    <PreferenceCategory android:title="@string/debug">
+
+        <Preference
+            android:key="logcat"
+            android:title="Logcat"
+            android:summary="View the DroidFS logcat"
+            android:icon="@drawable/icon_debug"/>
+
+    </PreferenceCategory>
+
     <PreferenceCategory android:title="@string/about">
 
         <Preference
@@ -110,7 +120,6 @@
         </Preference>
 
         <Preference
-            android:key="version"
             android:icon="@drawable/icon_info"
             android:title="@string/version"
             android:summary="@string/versionName"/> <!--added by gradle at build time-->

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.2.1'
+        classpath 'com.android.tools.build:gradle:8.2.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }