我正在为我的网站开发一个Android电视应用程序。在做了研究之后，我开始使用web-view加载我的web应用程序，其中包含html-5和JavaScript。
应用程序在网页视图上正常加载，我甚至可以在电视模拟器上正确导航，但只要我在Nexus播放器上部署应用程序，应用程序就不会执行输入活动 。当我点击游戏控制器上的按钮A 时，它会错误地点击Nexus播放器附带的游戏控制器上的A按钮 ------ ＃34; 您没有可以执行此操作的应用＆＃34;
之后我创建了一个虚拟应用程序来显示屏幕上的keyevnts以进行调试，并且工作正常，所有关键事件都被捕获。
我已经弄明白，因为它是一个基于htnl5和javascript的应用程序NP不兼容。 我已经对此进行了很多研究，但由于一切显而易见，因此无法找到任何可靠的东西。真的需要一个指针让它运转起来。
以下是用于加载webapp的webview代码：
public class ExampleActivity extends Activity implements DialogInterface.OnKeyListener
{
webView = (VideoEnabledWebView)findViewById(R.id.webView);
mButton1=(Button)findViewById(R.id.btn);
webView.addJavascriptInterface(new MyJavaScriptInterface(this),"AndroidFunction");
// Initialize the VideoEnabledWebChromeClient and set event handlers
View nonVideoLayout = findViewById(R.id.nonVideoLayout); // Your own view, read class comments
ViewGroup videoLayout = (ViewGroup)findViewById(R.id.videoLayout); // Your own view, read class comments
//noinspection all
View loadingView = getLayoutInflater().inflate(R.layout.view_loading_video, null); // Your own view, read class comments
webChromeClient = new VideoEnabledWebChromeClient(nonVideoLayout, videoLayout, loadingView, webView) // See all available constructors...
{
// Subscribe to standard events, such as onProgressChanged()...
@Override
public void onProgressChanged(WebView view, int progress) {
// Your code...
}
};
webChromeClient.setOnToggledFullscreen(new VideoEnabledWebChromeClient.ToggledFullscreenCallback() {
@Override
public void toggledFullscreen(boolean fullscreen) {
// Your code to handle the full-screen change, for example showing and hiding the title bar. Example:
if (fullscreen) {
WindowManager.LayoutParams attrs = getWindow().getAttributes();
attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
attrs.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
getWindow().setAttributes(attrs);
if (android.os.Build.VERSION.SDK_INT >= 14) {
//noinspection all
getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
}
} else {
WindowManager.LayoutParams attrs = getWindow().getAttributes();
attrs.flags &= ~WindowManager.LayoutParams.FLAG_FULLSCREEN;
attrs.flags &= ~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
getWindow().setAttributes(attrs);
if (android.os.Build.VERSION.SDK_INT >= 14) {
//noinspection all
getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
}
}
}
});
webView.setWebChromeClient(webChromeClient);
// Navigate anywhere you want, but consider that this classes have only been tested on YouTube's mobile site
webView.loadUrl("http://html5dev.anorakstech.com/iads/");
mButton1.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
webView.loadUrl("javascript:fillContent()");
}
});
}
以下是我用于从nexus播放器附带的Real控制器获取关键事件的代码
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
super.onKeyDown(keyCode, event);
Toast.makeText(ExampleActivity.this, "Key Pressed:"+keyCode, Toast.LENGTH_LONG).show();
webView.loadUrl("javascript:fillContent()");
switch(keyCode)
{
case KeyEvent.ACTION_DOWN:
Toast.makeText(ExampleActivity.this, "Key Down"+keyCode, Toast.LENGTH_LONG).show();
return true;
case KeyEvent.ACTION_UP:
Log.v("EA", "Keycode" + event.getKeyCode());
Toast.makeText(ExampleActivity.this, "Key Released"+event.getKeyCode(), Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_ENTER:
Log.v("EA","Keycode"+event.getKeyCode());
Toast.makeText(ExampleActivity.this, "Pressed Enter"+event.getKeyCode(), Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_DPAD_UP:
Log.v("EA","Keycode"+event.getKeyCode());
Toast.makeText(ExampleActivity.this, "Pressed 19", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_DPAD_DOWN:
Toast.makeText(ExampleActivity.this, "Pressed 20", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_DPAD_LEFT:
Log.v("EA","Pressed 21");
Toast.makeText(ExampleActivity.this, "Pressed 21", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_DPAD_RIGHT:
Toast.makeText(ExampleActivity.this, "Pressed 22", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_CAMERA:
Toast.makeText(ExampleActivity.this, "Pressed Camera Button", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_1:
Toast.makeText(ExampleActivity.this, "Pressed 1", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_HOME:
Toast.makeText(ExampleActivity.this, "Pressed Home Button", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_BACK:
Toast.makeText(ExampleActivity.this, "Pressed Back Button"+event.getKeyCode(), Toast.LENGTH_LONG).show();
Intent result = new Intent("Complete");
setResult(Activity.RESULT_OK, result);
finish();
return true;
case KeyEvent.KEYCODE_BUTTON_A:
Toast.makeText(ExampleActivity.this, "Pressed 96", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_BUTTON_B:
Toast.makeText(ExampleActivity.this, "Pressed 97", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_BUTTON_X:
Toast.makeText(ExampleActivity.this, "Pressed 99", Toast.LENGTH_LONG).show();
return true;
case KeyEvent.KEYCODE_BUTTON_Y:
Toast.makeText(ExampleActivity.this, "Pressed 100", Toast.LENGTH_LONG).show();
return true;
}
return false;
}
我在这里无法理解的是它没有显示来自keydown方法的任何吐司，但是当我从应用程序退出Keycode_Back事件（4）以及除BACK事件之外的任何其他键事件时它确实显示吐司不会在nexus播放器或模拟器上以上面的代码捕获它或显示任何吐司 - 真的让我发疯。
任何可以指出我正确方向的建议都会非常感激。
编辑1： 我现在可以在logcat中获取keyevnts，但它仍然没有显示Toasts，我仍然不断获得＆＃34; 你没有一个可以在按钮上执行此操作的应用程序A点击＆ ＃34;
答案 0 :(得分：0)
Are there any other components that may be consuming the key events?
如果没有，请删除super.onKeyDown(keyCode, event);
虽然这可能不是您的问题，from documentation：
默认情况下，在WebView中禁用JavaScript。您可以通过附加到WebView的WebSettings启用它。您可以使用getSettings（）检索WebSettings，然后使用setJavaScriptEnabled（）启用JavaScript。