增加配置按钮，目前还有错误

app/src/main/java/com/example/flomo_ai/SecondActivity.kt

@@ -11,6 +11,15 @@ import androidx.appcompat.app.AppCompatActivity
 import com.google.gson.Gson
 import com.google.gson.reflect.TypeToken
 
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.net.Uri
+import androidx.activity.result.contract.ActivityResultContracts
+import android.graphics.drawable.BitmapDrawable
+import java.io.InputStream
+import android.widget.RelativeLayout
+
+
 class SecondActivity : AppCompatActivity() {
     private lateinit var etApiButtonName: EditText
     private lateinit var etApiName: EditText
@@ -20,14 +29,13 @@ class SecondActivity : AppCompatActivity() {
     private lateinit var etApiModel: EditText
     private lateinit var btnSave: Button
     private lateinit var llConfigList: LinearLayout
-
+    private lateinit var backgroundLayout: RelativeLayout
     private var configs = mutableListOf<APIConfig>()
     private var editingId: Long? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         setTheme(androidx.appcompat.R.style.Theme_AppCompat)
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_second)
 
         initViews()
         loadConfigs()
@@ -45,8 +53,29 @@ class SecondActivity : AppCompatActivity() {
                 addConfig()
             }
         }
+
+        backgroundLayout = findViewById(R.id.mainLinearLayout)
+
+        val btnSelectImage: Button = findViewById(R.id.chooseButton)
+
+        val getContent = registerForActivityResult(ActivityResultContracts.GetContent()) { uri: Uri? ->
+            uri?.let {
+                try {
+                    val inputStream: InputStream = contentResolver.openInputStream(uri)!!
+                    val bitmap: Bitmap = BitmapFactory.decodeStream(inputStream)
+                    backgroundLayout.background = BitmapDrawable(resources, bitmap)
+                } catch (e: Exception) {
+                    e.printStackTrace()
+                }
+            }
+        }
+
+        btnSelectImage.setOnClickListener {
+            getContent.launch("image/*")
+        }
     }
 
+
     private fun initViews() {
         etApiButtonName = findViewById(R.id.etApiButtonName)
         etApiName = findViewById(R.id.etApiName)