✨ [Add] 新增单选模式

Author: rosuH

filepicker/src/main/java/me/rosuh/filepicker/FilePickerActivity.kt

@@ -137,6 +137,11 @@ class FilePickerActivity : BaseActivity(), View.OnClickListener, RecyclerViewLis
         }
 
         selectAllBtn = findViewById<Button>(R.id.btn_selected_all_file_picker).apply {
+            if (pickerConfig?.singleChoice == true) {
+                // 单选隐藏并且不初始化
+                visibility = View.GONE
+                return@apply
+            }
             setOnClickListener(this@FilePickerActivity)
             FilePickerManager.config?.selectAllText?.let {
                 text = it

filepicker/src/main/java/me/rosuh/filepicker/config/FilePickerConfig.kt

@@ -26,6 +26,11 @@ class FilePickerConfig(private val pickerManager: FilePickerManager) {
      * 在选中时是否忽略文件夹
      */
     internal var isSkipDir = true
+    /**
+     * 是否是单选
+     * 如果是单选，则隐藏顶部【全选/取消全选按钮】
+     */
+    internal var singleChoice = false
     /**
      * 最大可被选中数量
      */
@@ -144,6 +149,11 @@ class FilePickerConfig(private val pickerManager: FilePickerManager) {
         return this
     }
 
+    fun enableSingleChoice(): FilePickerConfig {
+        this.singleChoice = true
+        return this
+    }
+
     fun setText(
         selectAllString: String?,
         unSelectAllString: String?,

sample/src/main/java/me/rosuh/sample/SampleActivity.kt

@@ -68,7 +68,7 @@ class SampleActivity : AppCompatActivity() {
             FilePickerManager
                 .from(this@SampleActivity)
                 .setTheme(R.style.FilePickerThemeRail)
-                .maxSelectable(1)
+                .enableSingleChoice()
                 .forResult(FilePickerManager.REQUEST_CODE)
         }
         // 只展示文件夹