channel reversal

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
           keyPassword: ${{ secrets.ALIAS_PASSWORD }}
         env:
           # override default build-tools version (29.0.3) -- optional
-          BUILD_TOOLS_VERSION: "30.0.2"
+          BUILD_TOOLS_VERSION: "34.0.0"
 
       - name: Create Release
         id: create_release

app/build.gradle

@@ -100,10 +100,13 @@ dependencies {
     // For HLS playback support with ExoPlayer
     implementation "androidx.media3:media3-exoplayer-hls:$media3_version"
 
+    // 21:2.9.0 17:2.6.4
+    def retrofit2_version = "2.9.0"
+
     implementation 'com.google.protobuf:protobuf-kotlin:3.25.1'
-    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation "com.squareup.retrofit2:converter-gson:$retrofit2_version"
-    implementation 'com.squareup.retrofit2:converter-protobuf:2.9.0'
+    implementation "com.squareup.retrofit2:converter-protobuf:$retrofit2_version"
-    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation "com.squareup.retrofit2:retrofit:$retrofit2_version"
     implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.2"
     implementation 'androidx.core:core-ktx:1.11.0-beta02'
     implementation 'androidx.leanback:leanback:1.2.0-alpha02'

app/src/main/java/com/lizongying/mytv/MainActivity.kt

@@ -1,6 +1,7 @@
 package com.lizongying.mytv
 
-import android.app.AlertDialog
+import android.content.Context
+import android.content.SharedPreferences
 import android.content.pm.PackageInfo
 import android.content.pm.PackageManager
 import android.content.pm.Signature
@@ -15,11 +16,7 @@ import android.view.KeyEvent
 import android.view.MotionEvent
 import android.view.View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
 import android.view.WindowManager
-import android.widget.ImageView
-import android.widget.LinearLayout
-import android.widget.TextView
 import android.widget.Toast
-import androidx.core.content.ContextCompat
 import androidx.fragment.app.FragmentActivity
 import com.lizongying.mytv.models.TVViewModel
 import java.security.MessageDigest
@@ -36,7 +33,10 @@ class MainActivity : FragmentActivity() {
     private lateinit var gestureDetector: GestureDetector
 
     private val handler = Handler()
-    private val delay: Long = 3000
+    private val delay: Long = 4000
+
+    private lateinit var sharedPref: SharedPreferences
+    private var channelReversal = false
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -56,6 +56,9 @@ class MainActivity : FragmentActivity() {
             mainFragment.view?.requestFocus()
         }
         gestureDetector = GestureDetector(this, GestureListener())
+
+        sharedPref = getPreferences(Context.MODE_PRIVATE)
+        channelReversal = sharedPref.getBoolean(CHANNEL_REVERSAL, false)
     }
 
     fun showInfoFragment(tvViewModel: TVViewModel) {
@@ -63,7 +66,6 @@ class MainActivity : FragmentActivity() {
     }
 
     fun play(tvViewModel: TVViewModel) {
-        Log.i(TAG, "play: ${tvViewModel.getTV()}")
         playerFragment.play(tvViewModel)
         mainFragment.view?.requestFocus()
     }
@@ -170,88 +172,135 @@ class MainActivity : FragmentActivity() {
         }
     }
 
-    override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
+    fun saveChannelReversal(channelReversal: Boolean) {
-        when (keyCode) {
+        with(sharedPref.edit()) {
-            KeyEvent.KEYCODE_BACK -> {
+            putBoolean(CHANNEL_REVERSAL, channelReversal)
-                if (!mainFragmentIsHidden()) {
+            apply()
-                    hideMainFragment()
+        }
-                    return true
+        this.channelReversal = channelReversal
-                }
+    }
 
-                if (doubleBackToExitPressedOnce) {
+    private fun showHelp() {
-                    super.onBackPressed()
+        if (!mainFragment.isHidden) {
-                    return true
+            return
-                }
+        }
 
-                this.doubleBackToExitPressedOnce = true
+        val versionName = getPackageInfo().versionName
-                Toast.makeText(this, "再按一次退出", Toast.LENGTH_SHORT).show()
+        val dialogFragment = MyDialogFragment(versionName, channelReversal)
+        dialogFragment.show(supportFragmentManager, "settings_dialog")
+    }
 
-                Handler(Looper.getMainLooper()).postDelayed({
+    private fun channelUp() {
-                    doubleBackToExitPressedOnce = false
+        if (mainFragment.isHidden) {
-                }, 2000)
+            if (channelReversal) {
-                return true
+                next()
+                return
             }
-
+            prev()
-            KeyEvent.KEYCODE_MENU -> {
+        } else {
-                val versionName = getPackageInfo().versionName
-
-                val textView = TextView(this)
-                textView.text =
-                    "当前版本: $versionName\n获取最新: https://github.com/lizongying/my-tv/releases/"
-
-                val imageView = ImageView(this)
-                val drawable = ContextCompat.getDrawable(this, R.drawable.appreciate)
-                imageView.setImageDrawable(drawable)
-
-                val linearLayout = LinearLayout(this)
-                linearLayout.orientation = LinearLayout.VERTICAL
-                linearLayout.addView(textView)
-                linearLayout.addView(imageView)
-
-                val layoutParams = LinearLayout.LayoutParams(
-                    LinearLayout.LayoutParams.MATCH_PARENT,
-                    LinearLayout.LayoutParams.WRAP_CONTENT
-                )
-                imageView.layoutParams = layoutParams
-                textView.layoutParams = layoutParams
-
-                val builder: AlertDialog.Builder = AlertDialog.Builder(this)
-                builder
-                    .setView(linearLayout)
-
-                val dialog: AlertDialog = builder.create()
-                dialog.show()
-                return true
-            }
-
-            KeyEvent.KEYCODE_DPAD_CENTER -> {
-                Log.i(TAG, "KEYCODE_DPAD_CENTER")
-                switchMainFragment()
-            }
-
-            KeyEvent.KEYCODE_DPAD_UP -> {
-                if (mainFragment.isHidden) {
-                    prev()
-                } else {
 //                    if (mainFragment.selectedPosition == 0) {
 //                        mainFragment.setSelectedPosition(
 //                            mainFragment.tvListViewModel.maxNum.size - 1,
 //                            false
 //                        )
 //                    }
-                }
+        }
-            }
+    }
 
-            KeyEvent.KEYCODE_DPAD_DOWN -> {
+    private fun channelDown() {
-                if (mainFragment.isHidden) {
+        if (mainFragment.isHidden) {
-                    next()
+            if (channelReversal) {
-                } else {
+                prev()
+                return
+            }
+            next()
+        } else {
 //                    if (mainFragment.selectedPosition == mainFragment.tvListViewModel.maxNum.size - 1) {
 ////                        mainFragment.setSelectedPosition(0, false)
 //                        hideMainFragment()
 //                        return false
 //                    }
-                }
+        }
+    }
+
+    private fun back() {
+        if (!mainFragmentIsHidden()) {
+            hideMainFragment()
+            return
+        }
+
+        if (doubleBackToExitPressedOnce) {
+            super.onBackPressed()
+            return
+        }
+
+        doubleBackToExitPressedOnce = true
+        Toast.makeText(this, "再按一次退出", Toast.LENGTH_SHORT).show()
+
+        Handler(Looper.getMainLooper()).postDelayed({
+            doubleBackToExitPressedOnce = false
+        }, 2000)
+    }
+
+    override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
+        when (keyCode) {
+            KeyEvent.KEYCODE_ESCAPE -> {
+                back()
+                return true
+            }
+
+            KeyEvent.KEYCODE_BACK -> {
+                back()
+                return true
+            }
+
+            KeyEvent.KEYCODE_BOOKMARK -> {
+                showHelp()
+                return true
+            }
+
+            KeyEvent.KEYCODE_UNKNOWN -> {
+                showHelp()
+                return true
+            }
+
+            KeyEvent.KEYCODE_HELP -> {
+                showHelp()
+                return true
+            }
+
+            KeyEvent.KEYCODE_SETTINGS -> {
+                showHelp()
+                return true
+            }
+
+            KeyEvent.KEYCODE_MENU -> {
+                showHelp()
+                return true
+            }
+
+            KeyEvent.KEYCODE_ENTER -> {
+                switchMainFragment()
+            }
+
+            KeyEvent.KEYCODE_DPAD_CENTER -> {
+                switchMainFragment()
+            }
+
+            KeyEvent.KEYCODE_DPAD_UP -> {
+                channelUp()
+            }
+
+            KeyEvent.KEYCODE_CHANNEL_UP -> {
+                channelUp()
+            }
+
+            KeyEvent.KEYCODE_DPAD_DOWN -> {
+                channelDown()
+            }
+
+            KeyEvent.KEYCODE_CHANNEL_DOWN -> {
+                channelDown()
             }
 
             KeyEvent.KEYCODE_DPAD_LEFT -> {
@@ -336,5 +385,6 @@ class MainActivity : FragmentActivity() {
 
     companion object {
         private const val TAG = "MainActivity"
+        private const val CHANNEL_REVERSAL = "channel_reversal"
     }
 }

app/src/main/java/com/lizongying/mytv/MainFragment.kt

@@ -209,8 +209,8 @@ class MainFragment : BrowseSupportFragment() {
         itemPosition = sharedPref?.getInt("position", 0)!!
         if (itemPosition >= tvListViewModel.size()) {
             itemPosition = 0
-            tvListViewModel.setItemPosition(itemPosition)
         }
+        tvListViewModel.setItemPosition(itemPosition)
     }
 
     fun fragmentReady() {

app/src/main/java/com/lizongying/mytv/MyDialogFragment.kt

@@ -0,0 +1,44 @@
+package com.lizongying.mytv
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.DialogFragment
+import com.lizongying.mytv.databinding.DialogBinding
+
+
+class MyDialogFragment(private val versionName: String, private val channelReversal: Boolean) :
+    DialogFragment() {
+
+    private var _binding: DialogBinding? = null
+    private val binding get() = _binding!!
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = DialogBinding.inflate(inflater, container, false)
+        _binding?.version?.text =
+            "当前版本: $versionName\n获取最新: https://github.com/lizongying/my-tv/releases/"
+
+        val switchView = _binding?.switchView
+        switchView?.isChecked = channelReversal
+        switchView?.setOnCheckedChangeListener { _, isChecked ->
+            (activity as MainActivity).saveChannelReversal(isChecked)
+        }
+
+        return binding.root
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+    companion object {
+        const val TAG = "MyDialogFragment"
+    }
+}
+

app/src/main/java/com/lizongying/mytv/PlayerFragment.kt

@@ -24,6 +24,7 @@ class PlayerFragment : Fragment() {
     private var _binding: PlayerBinding? = null
     private var playerView: PlayerView? = null
     private var tvViewModel: TVViewModel? = null
+    private val aspectRatio = 16f / 9f
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?,
@@ -43,10 +44,9 @@ class PlayerFragment : Fragment() {
                 playerView!!.player?.playWhenReady = true
                 playerView!!.player?.addListener(object : Player.Listener {
                     override fun onVideoSizeChanged(videoSize: VideoSize) {
-                        val aspectRatio = 16f / 9f
-                        val layoutParams = playerView?.layoutParams
                         val ratio = playerView?.measuredWidth?.div(playerView?.measuredHeight!!)
                         if (ratio != null) {
+                            val layoutParams = playerView?.layoutParams
                             if (ratio < aspectRatio) {
                                 layoutParams?.height =
                                     (playerView?.measuredWidth?.div(aspectRatio))?.toInt()

app/src/main/java/com/lizongying/mytv/Request.kt

@@ -87,7 +87,10 @@ class Request {
         ysp = YSP(context)
     }
 
+    var call: Call<LiveInfo>? = null
+
     fun fetchVideo(tvModel: TVViewModel, cookie: String) {
+        call?.cancel()
         if (::myRunnable.isInitialized) {
             handler.removeCallbacks(myRunnable)
         }
@@ -97,71 +100,71 @@ class Request {
         tvModel.seq = 0
         val data = ysp?.switch(tvModel)
         val request = data?.let { LiveInfoRequest(it) }
+        call = request?.let { yspApiService.getLiveInfo("guid=${ysp?.getGuid()}; $cookie", it) }
 
-        request?.let { yspApiService.getLiveInfo(cookie, it) }
+        call?.enqueue(object : Callback<LiveInfo> {
-            ?.enqueue(object : Callback<LiveInfo> {
+            override fun onResponse(call: Call<LiveInfo>, response: Response<LiveInfo>) {
-                override fun onResponse(call: Call<LiveInfo>, response: Response<LiveInfo>) {
+                if (response.isSuccessful) {
-                    if (response.isSuccessful) {
+                    val liveInfo = response.body()
-                        val liveInfo = response.body()
+                    if (liveInfo?.data?.playurl != null) {
-                        if (liveInfo?.data?.playurl != null) {
+                        val chanll = liveInfo.data.chanll
-                            val chanll = liveInfo.data.chanll
+                        val decodedBytes = Base64.decode(
-                            val decodedBytes = Base64.decode(
+                            chanll.substring(9, chanll.length - 3),
-                                chanll.substring(9, chanll.length - 3),
+                            Base64.DEFAULT
-                                Base64.DEFAULT
+                        )
-                            )
+                        val decodedString = String(decodedBytes)
-                            val decodedString = String(decodedBytes)
+                        val regex = Regex("""des_key = "([^"]+).+var des_iv = "([^"]+)""")
-                            val regex = Regex("""des_key = "([^"]+).+var des_iv = "([^"]+)""")
+                        val matchResult = regex.find(decodedString)
-                            val matchResult = regex.find(decodedString)
+                        if (matchResult != null) {
-                            if (matchResult != null) {
+                            val (key, iv) = matchResult.destructured
-                                val (key, iv) = matchResult.destructured
+                            val keyBytes = Base64.decode(key, Base64.DEFAULT)
-                                val keyBytes = Base64.decode(key, Base64.DEFAULT)
+                            val ivBytes = Base64.decode(iv, Base64.DEFAULT)
-                                val ivBytes = Base64.decode(iv, Base64.DEFAULT)
+                            val url = liveInfo.data.playurl + "&revoi=" + encryptTripleDES(
-                                val url = liveInfo.data.playurl + "&revoi=" + encryptTripleDES(
+                                keyBytes + byteArrayOf(0, 0, 0, 0, 0, 0, 0, 0),
-                                    keyBytes + byteArrayOf(0, 0, 0, 0, 0, 0, 0, 0),
+                                ivBytes
-                                    ivBytes
+                            ).uppercase()
-                                ).uppercase()
+                            Log.i(TAG, "$title url $url")
-                                Log.i(TAG, "$title url $url")
+                            tvModel.addVideoUrl(url)
-                                tvModel.addVideoUrl(url)
+                            tvModel.allReady()
-                                tvModel.allReady()
+                            tvModel.retryTimes = 0
-                                tvModel.retryTimes = 0
+                            myRunnable = MyRunnable(tvModel)
-                                myRunnable = MyRunnable(tvModel)
+                            handler.post(myRunnable)
-                                handler.post(myRunnable)
-                            } else {
-                                Log.e(TAG, "$title key error")
-                                if (tvModel.retryTimes < tvModel.retryMaxTimes) {
-                                    tvModel.retryTimes++
-                                    fetchVideo(tvModel, cookie)
-                                }
-                            }
                         } else {
-                            if (liveInfo?.data?.errinfo != null && liveInfo.data.errinfo == "应版权方要求，暂停提供直播信号，请点击观看其他精彩节目") {
+                            Log.e(TAG, "$title key error")
-                                Log.e(TAG, "$title error ${liveInfo.data.errinfo}")
+                            if (tvModel.retryTimes < tvModel.retryMaxTimes) {
-                                tvModel.setErrInfo(liveInfo.data.errinfo)
+                                tvModel.retryTimes++
-                            } else {
+                                fetchVideo(tvModel, cookie)
-                                Log.e(TAG, "$title url error $request $liveInfo")
-                                if (tvModel.retryTimes < tvModel.retryMaxTimes) {
-                                    tvModel.retryTimes++
-                                    fetchVideo(tvModel, cookie)
-                                }
                             }
                         }
                     } else {
-                        Log.e(TAG, "$title status error")
+                        if (liveInfo?.data?.errinfo != null && liveInfo.data.errinfo == "应版权方要求，暂停提供直播信号，请点击观看其他精彩节目") {
-                        if (tvModel.retryTimes < tvModel.retryMaxTimes) {
+                            Log.e(TAG, "$title error ${liveInfo.data.errinfo}")
-                            tvModel.retryTimes++
+                            tvModel.setErrInfo(liveInfo.data.errinfo)
-                            fetchVideo(tvModel, cookie)
+                        } else {
+                            Log.e(TAG, "$title url error $request $liveInfo")
+                            if (tvModel.retryTimes < tvModel.retryMaxTimes) {
+                                tvModel.retryTimes++
+                                fetchVideo(tvModel, cookie)
+                            }
                         }
                     }
-                }
+                } else {
-
+                    Log.e(TAG, "$title status error")
-                override fun onFailure(call: Call<LiveInfo>, t: Throwable) {
-                    Log.e(TAG, "$title request error")
                     if (tvModel.retryTimes < tvModel.retryMaxTimes) {
                         tvModel.retryTimes++
                         fetchVideo(tvModel, cookie)
                     }
                 }
-            })
+            }
+
+            override fun onFailure(call: Call<LiveInfo>, t: Throwable) {
+                Log.e(TAG, "$title request error")
+                if (tvModel.retryTimes < tvModel.retryMaxTimes) {
+                    tvModel.retryTimes++
+                    fetchVideo(tvModel, cookie)
+                }
+            }
+        })
     }
 
     fun fetchVideo(tvModel: TVViewModel) {
@@ -169,11 +172,10 @@ class Request {
             .enqueue(object : Callback<Info> {
                 override fun onResponse(call: Call<Info>, response: Response<Info>) {
                     if (response.isSuccessful) {
-                        val info = response.body()
+                        val token = response.body()?.data?.token
-                        val token = info?.data?.token
                         Log.i(TAG, "info success $token")
                         val cookie =
-                            "guid=1; vplatform=109; yspopenid=vu0-8lgGV2LW9QjDeuBFsX8yMnzs37Q3_HZF6XyVDpGR_I; vusession=$token"
+                            "vplatform=109; yspopenid=vu0-8lgGV2LW9QjDeuBFsX8yMnzs37Q3_HZF6XyVDpGR_I; vusession=$token"
                         fetchVideo(tvModel, cookie)
                     } else {
                         Log.e(TAG, "info status error")
@@ -198,7 +200,7 @@ class Request {
         if (tvModel.needToken) {
             fetchVideo(tvModel)
         } else {
-            val cookie = "guid=1; vplatform=109"
+            val cookie = "vplatform=109"
             fetchVideo(tvModel, cookie)
         }
     }

app/src/main/java/com/lizongying/mytv/api/ApiClient.kt

@@ -5,6 +5,9 @@ import okhttp3.OkHttpClient
 import retrofit2.Retrofit
 import retrofit2.converter.gson.GsonConverterFactory
 import retrofit2.converter.protobuf.ProtoConverterFactory
+import javax.net.ssl.SSLContext
+import javax.net.ssl.TrustManager
+import javax.net.ssl.X509TrustManager
 
 
 class ApiClient {
@@ -13,9 +16,7 @@ class ApiClient {
     private val protoUrl = "https://capi.yangshipin.cn/"
     private val traceUrl = "https://btrace.yangshipin.cn/"
 
-    private var okHttpClient = OkHttpClient.Builder()
+    private var okHttpClient = getUnsafeOkHttpClient()
-        .dns(DnsCache())
-        .build()
 
     val yspApiService: YSPApiService by lazy {
         Retrofit.Builder()
@@ -48,4 +49,40 @@ class ApiClient {
             .addConverterFactory(GsonConverterFactory.create())
             .build().create(YSPBtraceService::class.java)
     }
+
+    private fun getUnsafeOkHttpClient(): OkHttpClient {
+        try {
+            val trustAllCerts: Array<TrustManager> = arrayOf(
+                object : X509TrustManager {
+                    override fun checkClientTrusted(
+                        chain: Array<out java.security.cert.X509Certificate>?,
+                        authType: String?
+                    ) {
+                    }
+
+                    override fun checkServerTrusted(
+                        chain: Array<out java.security.cert.X509Certificate>?,
+                        authType: String?
+                    ) {
+                    }
+
+                    override fun getAcceptedIssuers(): Array<java.security.cert.X509Certificate> {
+                        return emptyArray()
+                    }
+                }
+            )
+
+            val sslContext = SSLContext.getInstance("SSL")
+            sslContext.init(null, trustAllCerts, java.security.SecureRandom())
+
+            return OkHttpClient.Builder()
+                .sslSocketFactory(sslContext.socketFactory, trustAllCerts[0] as X509TrustManager)
+                .hostnameVerifier { _, _ -> true }
+                .dns(DnsCache())
+                .build()
+
+        } catch (e: Exception) {
+            throw RuntimeException(e)
+        }
+    }
 }

app/src/main/java/com/lizongying/mytv/api/YSP.kt

@@ -71,7 +71,10 @@ class YSP(var context: Context) {
 
         randStr = getRand()
 
-        guid = newGuid()
+        if (tvModel.retryTimes > 0) {
+            guid = newGuid()
+        }
+
         timeStr = getTimeStr()
 
 //        guid = "lq3oqitm_1e15dnzgjnb"
@@ -107,7 +110,7 @@ class YSP(var context: Context) {
         return guid
     }
 
-    fun newGuid(): String {
+    private fun newGuid(): String {
         guid = generateGuid()
         with(sharedPref!!.edit()) {
             putString("guid", guid)

app/src/main/java/com/lizongying/mytv/models/TVListViewModel.kt

@@ -1,6 +1,5 @@
 package com.lizongying.mytv.models
 
-import android.content.SharedPreferences
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel

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

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/dialog"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    >
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content">
+        <LinearLayout
+            android:layout_width="300dp"
+            android:layout_height="match_parent"
+            android:orientation="vertical"
+            android:paddingTop="20dp"
+            android:paddingLeft="7dp"
+            android:paddingRight="7dp"
+            android:background="#FF263238"
+            >
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/app_name"
+                android:textSize="16sp" />
+            <TextView
+                android:id="@+id/version"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="10dp"
+                android:layout_marginBottom="10dp"
+                android:text="当前版本: $versionName\n获取最新: https://github.com/lizongying/my-tv/releases/"
+                ></TextView>
+            <Switch
+                android:id="@+id/switch_view"
+                android:text="@string/title_channel_reversal"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" />
+        </LinearLayout>
+        <ImageView
+            android:layout_width="300dp"
+            android:layout_height="wrap_content"
+            android:src="@drawable/appreciate"
+            android:background="@color/white" />
+    </LinearLayout>
+</FrameLayout>

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

@@ -12,7 +12,6 @@
         android:layout_width="100dp"
         android:layout_height="wrap_content"
         android:layout_marginTop="8dp"
-        android:contentDescription="@string/logo"
         android:padding="10dp" />
 
     <LinearLayout

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

@@ -1,4 +1,4 @@
 <resources>
     <string name="app_name">我的电视</string>
-    <string name="logo">logo</string>
+    <string name="title_channel_reversal">频道反转</string>
 </resources>

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

@@ -1,6 +1,5 @@
 <resources>
 
-
     <style name="CustomImageCardViewStyle" parent="Widget.Leanback.ImageCardViewStyle">
         <item name="lbImageCardViewType">Title|Content</item>
     </style>