refactor: adapt image loader for small devices (re)

app/src/main/java/com/haodustudio/DailyNotes/utils/BitmapUtils.kt

@@ -20,6 +20,70 @@ import java.io.InputStream
 
 
 object BitmapUtils {
+
+    /**
+     * 安全地从资源中加载图片,自动计算采样率避免 OOM 和 Canvas 绘制过大 Bitmap 错误
+     * @param resId 图片资源ID
+     * @param reqWidth 需要的宽度(如果为0则不限制)
+     * @param reqHeight 需要的高度(如果为0则不限制)
+     * @return 采样后的 Bitmap,如果加载失败返回 null
+     */
+    fun decodeSampledBitmapFromResource(resId: Int, reqWidth: Int = 0, reqHeight: Int = 0): Bitmap? {
+        return try {
+            val options = BitmapFactory.Options().apply {
+                inJustDecodeBounds = true
+            }
+            BitmapFactory.decodeResource(BaseApplication.instance.resources, resId, options)
+
+            // 计算采样率
+            options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight)
+
+            // 实际解码图片
+            options.inJustDecodeBounds = false
+            options.inPreferredConfig = Bitmap.Config.RGB_565 // 使用更少内存
+
+            BitmapFactory.decodeResource(BaseApplication.instance.resources, resId, options)
+        } catch (e: Exception) {
+            Log.e("BitmapUtils", "Failed to decode bitmap from resource: $resId", e)
+            null
+        }
+    }
+
+    /**
+     * 计算合适的采样率
+     */
+    private fun calculateInSampleSize(
+        options: BitmapFactory.Options,
+        reqWidth: Int,
+        reqHeight: Int
+    ): Int {
+        val height = options.outHeight
+        val width = options.outWidth
+        var inSampleSize = 1
+
+        // 如果没有指定需求尺寸,使用屏幕尺寸作为限制
+        val finalReqWidth = if (reqWidth <= 0) {
+            BaseApplication.instance.resources.displayMetrics.widthPixels
+        } else reqWidth
+
+        val finalReqHeight = if (reqHeight <= 0) {
+            BaseApplication.instance.resources.displayMetrics.heightPixels
+        } else reqHeight
+
+        if (height > finalReqHeight || width > finalReqWidth) {
+            val halfHeight = height / 2
+            val halfWidth = width / 2
+
+            // 计算最大的 inSampleSize 值,保证采样后的图片尺寸大于需求尺寸
+            while (halfHeight / inSampleSize >= finalReqHeight && 
+                   halfWidth / inSampleSize >= finalReqWidth) {
+                inSampleSize *= 2
+            }
+        }
+
+        return inSampleSize
+    }
+
     fun getImageFromAssetsFile(filePath: String): Bitmap {
         val am: AssetManager = BaseApplication.instance.resources.assets
         val mIs: InputStream = am.open(filePath)

app/src/main/java/com/haodustudio/DailyNotes/view/activities/AboutSoftware.kt

@@ -9,6 +9,7 @@ import com.haodustudio.DailyNotes.BaseApplication
 import com.haodustudio.DailyNotes.R
 import com.haodustudio.DailyNotes.databinding.ActivityAboutSoftwareBinding
 import com.haodustudio.DailyNotes.helper.makeToast
+import com.haodustudio.DailyNotes.utils.BitmapUtils
 import com.haodustudio.DailyNotes.view.activities.base.BaseActivity
 import com.haodustudio.DailyNotes.view.activities.ViewImage
 import com.haodustudio.DailyNotes.view.activities.PrivacySettingsActivity
@@ -20,10 +21,36 @@ class AboutSoftware : BaseActivity() {
         super.onCreate(savedInstanceState)
         setContentView(binding.root)
 
+        loadBannerImageSafely()
         configureBanner()
         configureCards()
     }
 
+    private fun loadBannerImageSafely() {
+        try {
+            binding.bannerImage.post {
+                val viewWidth = binding.bannerImage.width
+                val viewHeight = binding.bannerImage.height
+
+                val bitmap = BitmapUtils.decodeSampledBitmapFromResource(
+                    R.drawable.about_banner,
+                    viewWidth,
+                    viewHeight
+                )
+
+                if (bitmap != null) {
+                    binding.bannerImage.setImageBitmap(bitmap)
+                } else {
+                    // 如果加载失败,使用占位符
+                    binding.bannerImage.setImageResource(android.R.color.darker_gray)
+                }
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+            binding.bannerImage.setImageResource(android.R.color.darker_gray)
+        }
+    }
+
     private fun configureBanner() {
         binding.bannerBadge.text = getString(R.string.about_codename_label)
         binding.bannerTitle.text = getString(R.string.about_banner_title)

app/src/main/java/com/haodustudio/DailyNotes/view/activities/PrivacySettingsActivity.kt

@@ -12,6 +12,7 @@ import com.haodustudio.DailyNotes.R
 import com.haodustudio.DailyNotes.databinding.ActivityPrivacySettingsBinding
 import com.haodustudio.DailyNotes.helper.PrivacySettingsManager
 import com.haodustudio.DailyNotes.helper.makeToast
+import com.haodustudio.DailyNotes.utils.BitmapUtils
 import com.haodustudio.DailyNotes.view.activities.base.BaseActivity
 
 class PrivacySettingsActivity : BaseActivity() {
@@ -22,10 +23,32 @@ class PrivacySettingsActivity : BaseActivity() {
         super.onCreate(savedInstanceState)
         setContentView(binding.root)
 
+        loadBannerImageSafely()
         setupListeners()
         refreshIndicators()
     }
 
+    private fun loadBannerImageSafely() {
+        try {
+            binding.privacyBannerImage.post {
+                val viewWidth = binding.privacyBannerImage.width
+                val viewHeight = binding.privacyBannerImage.height
+
+                val bitmap = BitmapUtils.decodeSampledBitmapFromResource(
+                    R.drawable.privacy_banner,
+                    viewWidth,
+                    viewHeight
+                )
+
+                bitmap?.let {
+                    binding.privacyBannerImage.setImageBitmap(it)
+                }
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+    }
+
     private fun setupListeners() {
         binding.privacyCardCrash.setOnClickListener {
             handleSettingClick(PrivacySetting.CRASH_REPORTING)

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

@@ -62,7 +62,6 @@
                         android:adjustViewBounds="true"
                         android:contentDescription="@string/about_banner_content_description"
                         android:scaleType="centerCrop"
-                        android:src="@drawable/about_banner"
                         app:layout_constraintTop_toTopOf="parent"
                         app:layout_constraintBottom_toBottomOf="parent"
                         app:layout_constraintStart_toStartOf="parent"

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

@@ -56,8 +56,7 @@
                     android:layout_height="wrap_content"
                     android:adjustViewBounds="true"
                     android:contentDescription="@string/privacy_banner_content_desc"
-                    android:scaleType="centerCrop"
-                    android:src="@drawable/privacy_banner" />
+                    android:scaleType="centerCrop" />
 
             </com.google.android.material.card.MaterialCardView>
 

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

@@ -66,7 +66,8 @@
                 android:layout_height="48dp"
                 android:background="@drawable/bg_privacy_dialog_button_cancel"
                 android:contentDescription="@string/privacy_confirm_cancel"
-                android:padding="14dp"
+                android:padding="8dp"
+                android:scaleType="fitCenter"
                 android:src="@drawable/privacy_dialog_close" />
 
             <TextView
@@ -93,7 +94,8 @@
                 android:layout_height="48dp"
                 android:background="@drawable/bg_privacy_dialog_button_confirm"
                 android:contentDescription="@string/privacy_confirm_confirm"
-                android:padding="14dp"
+                android:padding="12dp"
+                android:scaleType="fitCenter"
                 android:src="@drawable/privacy_dialog_yes" />
 
             <TextView