feat: 优化代码

app/src/main/java/io/legado/app/constant/AppConst.kt

@@ -29,14 +29,18 @@ object AppConst {
         ScriptEngineManager().getEngineByName("rhino")
     }
 
-    val TIME_FORMAT: SimpleDateFormat by lazy {
+    val timeFormat: SimpleDateFormat by lazy {
         SimpleDateFormat("HH:mm")
     }
 
-    val DATE_FORMAT: SimpleDateFormat by lazy {
+    val dateFormat: SimpleDateFormat by lazy {
         SimpleDateFormat("yyyy/MM/dd HH:mm")
     }
 
+    val fileNameFormat: SimpleDateFormat by lazy {
+        SimpleDateFormat("yy-MM-dd-HH-mm-ss")
+    }
+
     val keyboardToolChars: List<String> by lazy {
         arrayListOf(
             "@", "&", "|", "%", "/", ":", "[", "]", "{", "}", "<", ">", "\\", "$", "#", "!", ".",

app/src/main/java/io/legado/app/help/JsExtensions.kt

@@ -2,7 +2,7 @@ package io.legado.app.help
 
 import android.util.Base64
 import androidx.annotation.Keep
-import io.legado.app.constant.AppConst.DATE_FORMAT
+import io.legado.app.constant.AppConst.dateFormat
 import io.legado.app.model.analyzeRule.AnalyzeUrl
 import io.legado.app.utils.EncoderUtils
 import io.legado.app.utils.MD5Utils
@@ -50,6 +50,6 @@ interface JsExtensions {
     }
 
     fun timeFormat(time: Long): String {
-        return DATE_FORMAT.format(Date(time))
+        return dateFormat.format(Date(time))
     }
 }

app/src/main/java/io/legado/app/ui/book/download/DownloadActivity.kt

@@ -127,7 +127,7 @@ class DownloadActivity : VMBaseActivity<DownloadViewModel>(R.layout.activity_dow
         FilePicker.selectFolder(this, exportRequestCode) {
             val path = ACache.get(this@DownloadActivity).getAsString(exportBookPathKey)
             if (path.isNullOrEmpty()) {
-                toast("没有默认路径")
+                toast(R.string.no_default_path)
             } else {
                 startExport(path)
             }

app/src/main/java/io/legado/app/ui/book/local/ImportBookAdapter.kt

@@ -87,7 +87,7 @@ class ImportBookAdapter(context: Context, val callBack: CallBack) :
                     ll_brief.visible()
                     tv_tag.text = item.name.substringAfterLast(".")
                     tv_size.text = StringUtils.toSize(item.size)
-                    tv_date.text = AppConst.DATE_FORMAT.format(item.date)
+                    tv_date.text = AppConst.dateFormat.format(item.date)
                     cb_select.isChecked = selectedUris.contains(item.uri.toString())
                 }
                 tv_name.text = item.name

app/src/main/java/io/legado/app/ui/book/read/page/ContentView.kt

@@ -7,7 +7,7 @@ import android.view.MotionEvent
 import android.widget.FrameLayout
 import com.github.houbb.opencc4j.core.impl.ZhConvertBootstrap
 import io.legado.app.R
-import io.legado.app.constant.AppConst.TIME_FORMAT
+import io.legado.app.constant.AppConst.timeFormat
 import io.legado.app.help.AppConfig
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.ui.book.read.page.entities.TextPage
@@ -85,7 +85,7 @@ class ContentView(context: Context) : FrameLayout(context) {
     }
 
     fun upTime() {
-        tv_top_left.text = TIME_FORMAT.format(Date(System.currentTimeMillis()))
+        tv_top_left.text = timeFormat.format(Date(System.currentTimeMillis()))
     }
 
     fun upBattery(battery: Int) {

app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt

@@ -85,7 +85,12 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
             R.id.menu_group_manage ->
                 GroupManageDialog().show(supportFragmentManager, "groupManage")
             R.id.menu_import_source_local -> FilePicker
-                .selectFile(this, importRequestCode, "text/*", arrayOf("txt", "json"))
+                .selectFile(
+                    this,
+                    importRequestCode,
+                    type = "text/*",
+                    allowExtensions = arrayOf("txt", "json")
+                )
             R.id.menu_import_source_onLine -> showImportDialog()
         }
         if (item.groupId == R.id.source_group) {

app/src/main/java/io/legado/app/ui/filechooser/FilePicker.kt

@@ -14,8 +14,13 @@ import org.jetbrains.anko.toast
 @Suppress("unused")
 object FilePicker {
 
-    fun selectFolder(activity: AppCompatActivity, requestCode: Int, default: (() -> Unit)? = null) {
+    fun selectFolder(
-        activity.alert(titleResource = R.string.select_folder) {
+        activity: AppCompatActivity,
+        requestCode: Int,
+        title: String = activity.getString(R.string.select_folder),
+        default: (() -> Unit)? = null
+    ) {
+        activity.alert(title = title) {
             val selectList =
                 activity.resources.getStringArray(R.array.select_folder).toMutableList()
             default ?: let {
@@ -45,9 +50,14 @@ object FilePicker {
         }.show()
     }
 
-    fun selectFolder(fragment: Fragment, requestCode: Int, default: (() -> Unit)? = null) {
+    fun selectFolder(
+        fragment: Fragment,
+        requestCode: Int,
+        title: String = fragment.getString(R.string.select_folder),
+        default: (() -> Unit)? = null
+    ) {
         fragment.requireContext()
-            .alert(titleResource = R.string.select_folder) {
+            .alert(title = title) {
                 val selectList =
                     fragment.resources.getStringArray(R.array.select_folder).toMutableList()
                 default ?: let {
@@ -80,11 +90,12 @@ object FilePicker {
     fun selectFile(
         activity: BaseActivity,
         requestCode: Int,
+        title: String = activity.getString(R.string.select_file),
         type: String,
         allowExtensions: Array<String>?,
         default: (() -> Unit)? = null
     ) {
-        activity.alert(titleResource = R.string.select_file) {
+        activity.alert(title = title) {
             val selectList =
                 activity.resources.getStringArray(R.array.select_folder).toMutableList()
             default ?: let {
@@ -119,12 +130,13 @@ object FilePicker {
     fun selectFile(
         fragment: Fragment,
         requestCode: Int,
+        title: String = fragment.getString(R.string.select_file),
         type: String,
         allowExtensions: Array<String>,
         default: (() -> Unit)? = null
     ) {
         fragment.requireContext()
-            .alert(titleResource = R.string.select_file) {
+            .alert(title = title) {
                 val selectList =
                     fragment.resources.getStringArray(R.array.select_folder).toMutableList()
                 default ?: let {

app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt

@@ -180,7 +180,12 @@ class ReplaceRuleActivity : VMBaseActivity<ReplaceRuleViewModel>(R.layout.activi
             R.id.menu_del_selection -> viewModel.delSelection(adapter.getSelection())
             R.id.menu_import_source_onLine -> showImportDialog()
             R.id.menu_import_source_local -> FilePicker
-                .selectFile(this, importRequestCode, "text/*", arrayOf("txt", "json"))
+                .selectFile(
+                    this,
+                    importRequestCode,
+                    type = "text/*",
+                    allowExtensions = arrayOf("txt", "json")
+                )
         }
         return super.onCompatOptionsItemSelected(item)
     }

app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt

@@ -1,6 +1,7 @@
 package io.legado.app.ui.rss.read
 
 import android.annotation.SuppressLint
+import android.content.Intent
 import android.os.Bundle
 import android.view.KeyEvent
 import android.view.Menu
@@ -14,6 +15,9 @@ import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.lib.theme.DrawableUtils
 import io.legado.app.lib.theme.primaryTextColor
+import io.legado.app.ui.filechooser.FileChooserDialog
+import io.legado.app.ui.filechooser.FilePicker
+import io.legado.app.utils.ACache
 import io.legado.app.utils.NetworkUtils
 import io.legado.app.utils.getViewModel
 import io.legado.app.utils.openUrl
@@ -21,17 +25,22 @@ import kotlinx.android.synthetic.main.activity_rss_read.*
 import kotlinx.coroutines.launch
 import org.apache.commons.text.StringEscapeUtils
 import org.jetbrains.anko.share
+import org.jetbrains.anko.toast
 import org.jsoup.Jsoup
 import org.jsoup.safety.Whitelist
 
+
 class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_read),
+    FileChooserDialog.CallBack,
     ReadRssViewModel.CallBack {
 
     override val viewModel: ReadRssViewModel
         get() = getViewModel(ReadRssViewModel::class.java)
-
+    private val savePathRequestCode = 132
+    private val imagePathKey = ""
     private var starMenuItem: MenuItem? = null
     private var ttsMenuItem: MenuItem? = null
+    var webPic: String? = null
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         viewModel.callBack = this
@@ -95,6 +104,30 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
             domStorageEnabled = true
             allowContentAccess = true
         }
+        web_view.setOnLongClickListener {
+            val hitTestResult = web_view.hitTestResult
+            if (hitTestResult.type == WebView.HitTestResult.IMAGE_TYPE ||
+                hitTestResult.type == WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE
+            ) {
+                hitTestResult.extra?.let {
+                    webPic = it
+                    saveImage()
+                    return@setOnLongClickListener true
+                }
+            }
+            return@setOnLongClickListener false
+        }
+    }
+
+    private fun saveImage() {
+        FilePicker.selectFolder(this, savePathRequestCode, getString(R.string.save_image)) {
+            val path = ACache.get(this).getAsString(imagePathKey)
+            if (path.isNullOrEmpty()) {
+                toast(R.string.no_default_path)
+            } else {
+                viewModel.saveImage(webPic, path)
+            }
+        }
     }
 
     @SuppressLint("SetJavaScriptEnabled")
@@ -113,7 +146,6 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
                         url
                     )//不想用baseUrl进else
                 } else {
-                    //webView.loadData(html, "text/html;charset=utf-8", "utf-8")//经测试可以解决中文乱码
                     web_view.loadDataWithBaseURL(
                         null,
                         html,
@@ -203,6 +235,24 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
         }
     }
 
+    override fun onFilePicked(requestCode: Int, currentPath: String) {
+        when (requestCode) {
+            savePathRequestCode -> {
+                ACache.get(this).put(imagePathKey, currentPath)
+                viewModel.saveImage(webPic, currentPath)
+            }
+        }
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        when (requestCode) {
+            savePathRequestCode -> data?.data?.let {
+                onFilePicked(requestCode, it.toString())
+            }
+        }
+    }
+
     override fun onDestroy() {
         super.onDestroy()
         web_view.destroy()

app/src/main/java/io/legado/app/ui/rss/read/ReadRssViewModel.kt

@@ -2,19 +2,29 @@ package io.legado.app.ui.rss.read
 
 import android.app.Application
 import android.content.Intent
+import android.net.Uri
 import android.speech.tts.TextToSpeech
 import android.speech.tts.UtteranceProgressListener
+import android.util.Base64
+import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.MutableLiveData
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.BaseViewModel
+import io.legado.app.constant.AppConst
 import io.legado.app.data.entities.RssArticle
 import io.legado.app.data.entities.RssSource
 import io.legado.app.model.Rss
 import io.legado.app.model.analyzeRule.AnalyzeUrl
+import io.legado.app.utils.DocumentUtils
+import io.legado.app.utils.FileUtils
+import io.legado.app.utils.isContentPath
+import io.legado.app.utils.writeBytes
 import kotlinx.coroutines.launch
+import java.io.File
 import java.util.*
 
+
 class ReadRssViewModel(application: Application) : BaseViewModel(application),
     TextToSpeech.OnInitListener {
     var callBack: CallBack? = null
@@ -85,6 +95,31 @@ class ReadRssViewModel(application: Application) : BaseViewModel(application),
         }
     }
 
+    fun saveImage(webPic: String?, path: String) {
+        webPic ?: return
+        execute {
+            val fileName = "${AppConst.fileNameFormat.format(Date(System.currentTimeMillis()))}.jpg"
+            webData2bitmap(webPic).let { biteArray ->
+                if (path.isContentPath()) {
+                    val uri = Uri.parse(path)
+                    DocumentFile.fromTreeUri(context, uri)?.let { doc ->
+                        DocumentUtils.createFileIfNotExist(doc, fileName)
+                            ?.writeBytes(context, biteArray)
+                    }
+                } else {
+                    val file = FileUtils.createFileIfNotExist(File(path), fileName)
+                    file.writeBytes(biteArray)
+                }
+            }
+        }.onError {
+            toast("保存图片失败:${it.localizedMessage}")
+        }
+    }
+
+    private fun webData2bitmap(data: String): ByteArray {
+        return Base64.decode(data.split(",").toTypedArray()[1], Base64.DEFAULT)
+    }
+
     fun clHtml(content: String): String {
         return if (content.contains("<style>".toRegex())) {
             content

app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt

@@ -83,7 +83,12 @@ class RssSourceActivity : VMBaseActivity<RssSourceViewModel>(R.layout.activity_r
         when (item.itemId) {
             R.id.menu_add -> startActivity<RssSourceEditActivity>()
             R.id.menu_import_source_local -> FilePicker
-                .selectFile(this, importRequestCode, "text/*", arrayOf("txt", "json"))
+                .selectFile(
+                    this,
+                    importRequestCode,
+                    type = "text/*",
+                    allowExtensions = arrayOf("txt", "json")
+                )
             R.id.menu_import_source_onLine -> showImportDialog()
             R.id.menu_import_source_qr -> startActivityForResult<QrCodeActivity>(qrRequestCode)
             R.id.menu_group_manage -> GroupManageDialog()

app/src/main/res/values/strings.xml

@@ -639,4 +639,6 @@
     <string name="title_center">居中</string>
     <string name="title_hide">隐藏</string>
     <string name="add_to_group">加入分组</string>
+    <string name="save_image">保存图片</string>
+    <string name="no_default_path">没有默认路径</string>
 </resources>