使用BitmapFactory.decodeFileDescriptor 避免重复初始化FileInputStream

app/build.gradle

@@ -178,7 +178,8 @@ dependencies {
     implementation 'com.github.gedoor:rhino-android:1.5'
 
     //网络
-    implementation 'com.squareup.okhttp3:okhttp:4.9.0'
+    //noinspection GradleDependency
+    implementation 'com.squareup.okhttp3:okhttp:4.9.1'
     implementation 'com.ljx.rxhttp:rxhttp:2.5.7'
     kapt 'com.ljx.rxhttp:rxhttp-compiler:2.5.7'
 

app/src/main/java/io/legado/app/utils/BitmapUtils.kt

@@ -28,11 +28,11 @@ object BitmapUtils {
      */
     fun decodeBitmap(path: String, width: Int, height: Int): Bitmap? {
         val op = BitmapFactory.Options()
-        op.inPreferredConfig=Config.RGB_565
+        op.inPreferredConfig = Config.RGB_565
-        var ips=FileInputStream(path)
+        val ips = FileInputStream(path)
         // inJustDecodeBounds如果设置为true,仅仅返回图片实际的宽和高,宽和高是赋值给opts.outWidth,opts.outHeight;
         op.inJustDecodeBounds = true
-        BitmapFactory.decodeStream(ips,null,op)//获取尺寸信息
+        BitmapFactory.decodeFileDescriptor(ips.fd, null, op)
         //获取比例大小
         val wRatio = ceil((op.outWidth / width).toDouble()).toInt()
         val hRatio = ceil((op.outHeight / height).toDouble()).toInt()
@@ -44,9 +44,8 @@ object BitmapUtils {
                 op.inSampleSize = hRatio
             }
         }
-        ips=FileInputStream(path)
         op.inJustDecodeBounds = false
-        return BitmapFactory.decodeStream(ips,null,op)
+        return BitmapFactory.decodeFileDescriptor(ips.fd, null, op)
     }
 
     /** 从path中获取Bitmap图片
@@ -54,15 +53,16 @@ object BitmapUtils {
      * @return
      */
     fun decodeBitmap(path: String): Bitmap? {
+
         val opts = BitmapFactory.Options()
-        opts.inPreferredConfig=Config.RGB_565
+        opts.inPreferredConfig = Config.RGB_565
-        var ips=FileInputStream(path)
+        val ips = FileInputStream(path)
         opts.inJustDecodeBounds = true
-        BitmapFactory.decodeStream(ips,null,opts)
+        BitmapFactory.decodeFileDescriptor(ips.fd, null, opts)
         opts.inSampleSize = computeSampleSize(opts, -1, 128 * 128)
         opts.inJustDecodeBounds = false
-        ips=FileInputStream(path)
+
-        return  BitmapFactory.decodeStream(ips,null,opts)
+        return BitmapFactory.decodeFileDescriptor(ips.fd, null, opts)
     }
 
     /**