目前,我的HiSense Q8安卓电视有一个启动屏幕,上面有应用程序、Youtube和Netflix图标。为了显示来自HDMI输入1的输入,我需要对遥控器进行一系列的点击。我想要的是一个android应用程序可以在引导时显示HDMI输入1,而不需要我使用遥控器(也就是让它表现得像一个简单的监视器)。但是,我似乎忽略了以编程方式选择HDMI输入的步骤。对相关的源代码示例有什么建议或提示吗?
电视上有android 8,我的目标是应用程序的Android7.1.1。
通过下面的调用,我可以获得要迭代的输入列表:
TvInputManager mTvInputManager = (TvInputManager) getSystemService(Context.TV_INPUT_SERVICE);
List<TvInputInfo> inputs = mTvInputManager.getTvInputList();HDMI TvInputInfo项的id字段如下所示:
"com.mediatex.tvinput/.hdmi.HDMInputService/HW4"
"com.mediatex.tvinput/.hdmi.HDMInputService/HW3"
"com.mediatex.tvinput/.hdmi.HDMInputService/HW2"然后尝试使用以下方法将显示的输入设置为HW2
TvView view = new TvView(this);
view.tune("com.mediatex.tvinput/.hdmi.HDMInputService/HW2", null);或者类似于HW4,但是什么都没有发生,我仍然看到了应用程序的显示,而不是HDMI输入。向TvView对象添加回调不会捕获任何错误。在我看来,创建TvView对象的方式有点可疑。
以下是整个代码:
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());
}
}
}布局是
<?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>清单是
<?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>应用程序的build.gradle是
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'
}发布于 2022-06-30 16:59:08
而不是对于第二个参数(URI)为null:
TvView view = new TvView(this);
view.tune("com.mediatex.tvinput/.hdmi.HDMInputService/HW2", null);您需要创建和发送一个有效的Uri:
TvView view = new TvView(this)
mInitChannelUri = TvContract.buildChannelUriForPassthroughInput("com.mediatex.tvinput/.hdmi.HDMInputService/HW2")
view.tune("com.mediatex.tvinput/.hdmi.HDMInputService/HW2", mInitChannelUri)这有点傻,因为您基本上发送了相同的输入名称字符串两次。但这对我有用。
最后,要想独立于TV品牌,您应该使用输入id参数而不是静态字符串常量(留给读者的练习是哈哈)。
发布于 2022-08-05 18:44:26
您不需要使用TvView。只需对ACTION_VIEW使用隐式意图即可。
我在我的索尼电视上测试了这个代码,它运行得很好。(我在用Kotlin)
// Passthrough inputs are "hardware" inputs like HDMI / Components. Non-passthrough input are
// usually internal tv tuners. You can also filter out non-passthrough inputs before this step.
val uri =
if (inputInfo.isPassthroughInput) TvContract.buildChannelUriForPassthroughInput(inputInfo.id)
else TvContract.buildChannelsUriForInput(inputInfo.id)
val intent = Intent(Intent.ACTION_VIEW, uri)
if (intent.resolveActivity(packageManager) != null) {
context.startActivity(intent)
}https://stackoverflow.com/questions/59938698
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