增加配置背景图的按钮，修订以前的错误

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

@@ -11,14 +11,15 @@ import androidx.appcompat.app.AppCompatActivity
 import com.google.gson.Gson
 import com.google.gson.reflect.TypeToken
 
+import android.app.Activity
+import android.content.Intent
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import android.net.Uri
+import android.provider.MediaStore
+import androidx.activity.result.ActivityResultLauncher
 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
@@ -29,9 +30,13 @@ 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
+    private lateinit var imagePickerLauncher: ActivityResultLauncher<Intent>
+
+    companion object {
+        private const val REQUEST_CODE_PICK_IMAGE = 1000
+    }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         setTheme(androidx.appcompat.R.style.Theme_AppCompat)
@@ -54,27 +59,30 @@ class SecondActivity : AppCompatActivity() {
             }
         }
 
-        backgroundLayout = findViewById(R.id.mainLinearLayout)
+        // 创建背景图
+        setContentView(R.layout.activity_second)
 
-        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()
+        imagePickerLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
+            if (result.resultCode == Activity.RESULT_OK && result.data != null) {
+                val selectedImageUri: Uri? = result.data?.data
+                selectedImageUri?.let { uri ->
+                    val bitmap = getBitmapFromUri(uri)
+                    // 使用bitmap更新背景或其他操作
                 }
             }
         }
-
-        btnSelectImage.setOnClickListener {
-            getContent.launch("image/*")
+        val chooseButton: Button = findViewById(R.id.chooseButton)
+        chooseButton.setOnClickListener {
+            val intent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
+            intent.type = "image/*"
+            imagePickerLauncher.launch(intent)
         }
     }
 
+    private fun getBitmapFromUri(uri: Uri): Bitmap? {
+        val inputStream: InputStream? = contentResolver.openInputStream(uri)
+        return BitmapFactory.decodeStream(inputStream)
+    }
 
     private fun initViews() {
         etApiButtonName = findViewById(R.id.etApiButtonName)