使用Android应用程序设置Android电视的输入

目前，我的海信Q8安卓电视有一个启动屏幕，上面有应用程序、Youtube和Netflix图标。在遥控器上有一系列的点击，我需要通过它来显示来自HDMI输入1的输入。我想要的是一个android应用程序可以在开机时显示HDMI input 1，而不需要我使用遥控器（也就是说，让它像一个简单的显示器）。然而，我似乎在以编程方式选择HDMI输入这一步上犯了错误。有没有关于相关源代码示例的建议或指针

电视上有安卓8，我的目标是安卓7.1.1

通过以下调用，我可以获得一个要迭代的输入列表：

  TvInputManager mTvInputManager = (TvInputManager) getSystemService(Context.TV_INPUT_SERVICE);
  List<TvInputInfo> inputs = mTvInputManager.getTvInputList();

然后，我尝试使用

TvView view = new TvView(this);
view.tune("com.mediatex.tvinput/.hdmi.HDMInputService/HW2", null);

或者类似的HW4，但什么都没有发生，我仍然看到应用程序显示，而不是HDMI输入。向TvView对象添加回调不会捕获任何错误。我创建TvView对象的方式对我来说似乎有点可疑

下面是整个代码：

package org.ericdavies.sethdmi1;

import android.app.Activity;
import android.content.Context;
import android.media.tv.TvContentRating;
import android.media.tv.TvTrackInfo;
import android.media.tv.TvView;
import android.os.Bundle;
import android.util.Log;

import android.media.tv.TvContract;
import android.net.Uri;

import android.media.tv.TvInputManager;
import android.media.tv.TvInputInfo;

import android.media.tv.TvInputService;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.util.List;

/*
 * Main Activity class that loads {@link MainFragment}.
 */
public class MainActivity extends Activity {

    TvView view;
    TextView tv;
    StringBuilder sb;

    private void setUpButton(final String inputId, int buttonTag) {
        Button bt = findViewById(R.id.buttonhw4);
        bt.setEnabled(true);
        bt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                view.setCallback(new TvView.TvInputCallback() {

                });
                view.tune(inputId, null);
            }
        });
    }

    public void reportState(final String state) {
        this.runOnUiThread(new Runnable() {
            public void run() {
                sb.append(state);
                tv.setText(sb.toString());
            }
        });
    }
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TvInputManager mTvInputManager = (TvInputManager) getSystemService(Context.TV_INPUT_SERVICE);
        sb = new StringBuilder();
        List<TvInputInfo> inputs = mTvInputManager.getTvInputList();
        view = new TvView(this);
        tv = findViewById(R.id.mytextfield);

        view.setCallback(new TvView.TvInputCallback() {
                             @Override
                             public void onConnectionFailed(String inputId) {
                                 super.onConnectionFailed(inputId);
                                 reportState("tvview.onconnectionFailed\n");
                             }

                             @Override
                             public void onDisconnected(String inputId) {
                                 super.onDisconnected(inputId);
                                 reportState("tvview.onDisconnected\n");
                             }

                             @Override
                             public void onChannelRetuned(String inputId, Uri channelUri) {
                                 super.onChannelRetuned(inputId, channelUri);
                                 reportState("tvview.onChannelRetuned\n");
                             }

                             @Override
                             public void onTracksChanged(String inputId, List<TvTrackInfo> tracks) {
                                 super.onTracksChanged(inputId, tracks);
                                 reportState("tvview.onTracksChanged\n");
                             }

                             @Override
                             public void onTrackSelected(String inputId, int type, String trackId) {
                                 super.onTrackSelected(inputId, type, trackId);
                                 reportState("tvview.onTrackSelected\n");
                             }

                             @Override
                             public void onVideoUnavailable(String inputId, int reason) {
                                 super.onVideoUnavailable(inputId, reason);
                                 reportState("tvview.onVideoUnavailable\n");
                             }

                             @Override
                             public void onContentBlocked(String inputId, TvContentRating rating) {
                                 super.onContentBlocked(inputId, rating);
                                 reportState("tvview.onContentBlocked\n");
                             }
                         }
                );

        for (TvInputInfo input : inputs) {
            String id = input.getId();
            if( input.isPassthroughInput() && id.contains("HDMIInputService")) {
                sb.append("inputid = " + input.getId() + "\n");
                if( id.contains("HW4")) {
                    setUpButton(id, R.id.buttonhw4);
                }
                if( id.contains("HW2")) {
                    setUpButton(id, R.id.buttonHw2);
                }
                if( id.contains("HW3")) {
                    setUpButton(id, R.id.buttonhw3);
                }
            }
        }

        if( tv != null) {
            tv.setText(sb.toString());
        }

    }
}

---

我想您错过了文档中提到的TVInputService。我很想看到这项工作，因为这是我曾经想过但没有时间去做的事情。从我对TVInputService的理解来看，它是一种提供用户可以交互选择的内容的方法。这就是你将如何实现netflix应用程序或youtube应用程序。我已经找到了HDMI端口的TVInputService，诀窍是将它连接到显示器。你解决过这个问题吗？

package org.ericdavies.sethdmi1;

import android.app.Activity;
import android.content.Context;
import android.media.tv.TvContentRating;
import android.media.tv.TvTrackInfo;
import android.media.tv.TvView;
import android.os.Bundle;
import android.util.Log;

import android.media.tv.TvContract;
import android.net.Uri;

import android.media.tv.TvInputManager;
import android.media.tv.TvInputInfo;

import android.media.tv.TvInputService;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.util.List;

/*
 * Main Activity class that loads {@link MainFragment}.
 */
public class MainActivity extends Activity {

    TvView view;
    TextView tv;
    StringBuilder sb;

    private void setUpButton(final String inputId, int buttonTag) {
        Button bt = findViewById(R.id.buttonhw4);
        bt.setEnabled(true);
        bt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                view.setCallback(new TvView.TvInputCallback() {

                });
                view.tune(inputId, null);
            }
        });
    }

    public void reportState(final String state) {
        this.runOnUiThread(new Runnable() {
            public void run() {
                sb.append(state);
                tv.setText(sb.toString());
            }
        });
    }
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TvInputManager mTvInputManager = (TvInputManager) getSystemService(Context.TV_INPUT_SERVICE);
        sb = new StringBuilder();
        List<TvInputInfo> inputs = mTvInputManager.getTvInputList();
        view = new TvView(this);
        tv = findViewById(R.id.mytextfield);

        view.setCallback(new TvView.TvInputCallback() {
                             @Override
                             public void onConnectionFailed(String inputId) {
                                 super.onConnectionFailed(inputId);
                                 reportState("tvview.onconnectionFailed\n");
                             }

                             @Override
                             public void onDisconnected(String inputId) {
                                 super.onDisconnected(inputId);
                                 reportState("tvview.onDisconnected\n");
                             }

                             @Override
                             public void onChannelRetuned(String inputId, Uri channelUri) {
                                 super.onChannelRetuned(inputId, channelUri);
                                 reportState("tvview.onChannelRetuned\n");
                             }

                             @Override
                             public void onTracksChanged(String inputId, List<TvTrackInfo> tracks) {
                                 super.onTracksChanged(inputId, tracks);
                                 reportState("tvview.onTracksChanged\n");
                             }

                             @Override
                             public void onTrackSelected(String inputId, int type, String trackId) {
                                 super.onTrackSelected(inputId, type, trackId);
                                 reportState("tvview.onTrackSelected\n");
                             }

                             @Override
                             public void onVideoUnavailable(String inputId, int reason) {
                                 super.onVideoUnavailable(inputId, reason);
                                 reportState("tvview.onVideoUnavailable\n");
                             }

                             @Override
                             public void onContentBlocked(String inputId, TvContentRating rating) {
                                 super.onContentBlocked(inputId, rating);
                                 reportState("tvview.onContentBlocked\n");
                             }
                         }
                );

        for (TvInputInfo input : inputs) {
            String id = input.getId();
            if( input.isPassthroughInput() && id.contains("HDMIInputService")) {
                sb.append("inputid = " + input.getId() + "\n");
                if( id.contains("HW4")) {
                    setUpButton(id, R.id.buttonhw4);
                }
                if( id.contains("HW2")) {
                    setUpButton(id, R.id.buttonHw2);
                }
                if( id.contains("HW3")) {
                    setUpButton(id, R.id.buttonhw3);
                }
            }
        }

        if( tv != null) {
            tv.setText(sb.toString());
        }

    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/top"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:visibility="visible">

    <EditText
        android:id="@+id/mytextfield"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:autoText="false"
        android:clickable="false"
        android:editable="false"
        android:ems="10"
        android:enabled="false"
        android:focusable="false"
        android:focusableInTouchMode="false"
        android:gravity="start|top"
        android:inputType="textMultiLine"
        android:selectAllOnFocus="false"
        android:text="-----" />

    <Button
        android:id="@+id/buttonhw4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="hw4" />

    <Button
        android:id="@+id/buttonHw2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="hw2" />

    <Button
        android:id="@+id/buttonhw3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:enabled="false"
        android:text="hw3" />
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="org.ericdavies.sethdmi1">

    <uses-feature
        android:name="android.hardware.touchscreen"
        android:required="false" />
    <uses-feature
        android:name="android.software.leanback"
        android:required="true" />
    <uses-feature
        android:name="android.software.LIVE_TV"
        android:required="true" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:banner="@drawable/app_icon_your_company"
            android:icon="@drawable/app_icon_your_company"
            android:label="@string/app_name"
            android:logo="@drawable/app_icon_your_company"
            android:screenOrientation="landscape">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".DetailsActivity" />
        <activity android:name=".PlaybackActivity" />
        <activity android:name=".BrowseErrorActivity" />
    </application>
</manifest>

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "org.ericdavies.sethdmi1"
        minSdkVersion 25
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.leanback:leanback:1.0.0'
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'com.github.bumptech.glide:glide:3.8.0'
}