keyboard jumpy fix

app/src/main/AndroidManifest.xml

@@ -19,7 +19,8 @@
         <activity
             android:name=".MainActivity"
             android:exported="true"
-            android:launchMode="singleTop">
+            android:launchMode="singleTop"
+            android:windowSoftInputMode="adjustNothing">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/com/example/fluffytrix/ui/screens/main/components/MessageTimeline.kt

@@ -13,6 +13,7 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.widthIn
 import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.imePadding
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.width
@@ -44,6 +45,8 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.graphics.Path
@@ -289,7 +292,8 @@ fun MessageTimeline(
                 .padding(
                     top = contentPadding.calculateTopPadding(),
                     bottom = contentPadding.calculateBottomPadding(),
-                ),
+                )
+                .imePadding(),
         ) {
             if (selectedChannel != null) {
                 if (selectedThread != null) {
@@ -1372,18 +1376,78 @@ private fun MessageInput(
                     tint = MaterialTheme.colorScheme.onSurfaceVariant,
                 )
             }
-            TextField(
-                value = text,
-                onValueChange = { text = it },
-                placeholder = { Text("Message #$channelName", color = MaterialTheme.colorScheme.onSurfaceVariant) },
-                modifier = Modifier.weight(1f).clip(RoundedCornerShape(8.dp)).heightIn(max = 160.dp),
-                maxLines = 8,
-                colors = TextFieldDefaults.colors(
-                    unfocusedContainerColor = MaterialTheme.colorScheme.surfaceVariant,
-                    focusedContainerColor = MaterialTheme.colorScheme.surfaceVariant,
-                    unfocusedIndicatorColor = Color.Transparent,
-                    focusedIndicatorColor = Color.Transparent,
-                ),
+            val surfaceVariant = MaterialTheme.colorScheme.surfaceVariant
+            val onSurface = MaterialTheme.colorScheme.onSurface
+            val onSurfaceVariant = MaterialTheme.colorScheme.onSurfaceVariant
+            val textStyle = MaterialTheme.typography.bodyLarge
+            val density = LocalDensity.current
+            AndroidView(
+                factory = { ctx ->
+                    object : android.widget.EditText(ctx) {
+                        override fun requestRectangleOnScreen(rect: android.graphics.Rect?, immediate: Boolean): Boolean {
+                            // Disable system scroll-into-view; Compose imePadding() handles it
+                            return false
+                        }
+                    }.apply {
+                        hint = "Message #$channelName"
+                        setHintTextColor(onSurfaceVariant.toArgb())
+                        setTextColor(onSurface.toArgb())
+                        setTextSize(android.util.TypedValue.COMPLEX_UNIT_SP, textStyle.fontSize.value)
+                        background = android.graphics.drawable.GradientDrawable().apply {
+                            setColor(surfaceVariant.toArgb())
+                            cornerRadius = with(density) { 8.dp.toPx() }
+                        }
+                        setPadding(
+                            with(density) { 16.dp.toPx().toInt() },
+                            with(density) { 12.dp.toPx().toInt() },
+                            with(density) { 16.dp.toPx().toInt() },
+                            with(density) { 12.dp.toPx().toInt() },
+                        )
+                        maxLines = 8
+                        inputType = android.text.InputType.TYPE_CLASS_TEXT or
+                            android.text.InputType.TYPE_TEXT_FLAG_MULTI_LINE or
+                            android.text.InputType.TYPE_TEXT_FLAG_CAP_SENTENCES
+                        isSingleLine = false
+
+                        // Prevent EditText from fighting with Compose's imePadding()
+                        imeOptions = android.view.inputmethod.EditorInfo.IME_FLAG_NO_EXTRACT_UI
+
+                        addTextChangedListener(object : android.text.TextWatcher {
+                            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {}
+                            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {}
+                            override fun afterTextChanged(s: android.text.Editable?) {
+                                text = s?.toString() ?: ""
+                            }
+                        })
+
+                        androidx.core.view.ViewCompat.setOnReceiveContentListener(
+                            this,
+                            arrayOf("image/*"),
+                        ) { _, payload ->
+                            val clip = payload.clip
+                            var remaining = payload
+                            for (i in 0 until clip.itemCount) {
+                                val uri = clip.getItemAt(i).uri
+                                if (uri != null) {
+                                    attachedUris = attachedUris + uri
+                                }
+                            }
+                            // Return null to indicate all content was consumed
+                            if (clip.itemCount > 0 && (0 until clip.itemCount).any { clip.getItemAt(it).uri != null }) null
+                            else remaining
+                        }
+                    }
+                },
+                update = { editText ->
+                    if (editText.text.toString() != text) {
+                        editText.setText(text)
+                        editText.setSelection(text.length)
+                    }
+                    editText.hint = "Message #$channelName"
+                },
+                modifier = Modifier
+                    .weight(1f)
+                    .heightIn(max = 160.dp),
             )
             if (emojiPacks.isNotEmpty()) {
                 IconButton(onClick = { showEmojiPackPicker = true }) {