Android WebView 總結 —— 使用HTML5播放視訊及全屏方案
阿新 • • 發佈:2018-12-30
public class WebVideoActivity extends Activity {
private WebView webView;
/** 視訊全屏引數 */
protected static final FrameLayout.LayoutParams COVER_SCREEN_PARAMS = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
private View customView;
private FrameLayout fullscreenContainer;
private WebChromeClient.CustomViewCallback customViewCallback;
@Override
protected void onCreate(Bundle bundle) {
super.onCreate(bundle);
setContentView(R.layout.activity_xx);
webView = (WebView) findViewById(R.id.xx);
initWebView();
}
@Override
protected void onStop() {
super.onStop();
webView.reload();
}
/** 展示網頁介面 **/
public void initWebView() { WebChromeClient wvcc = new WebChromeClient(); WebSettings webSettings = webView.getSettings(); webSettings.setJavaScriptEnabled(true); webSettings.setUseWideViewPort( true); // 關鍵點
webSettings.setAllowFileAccess(true); // 允許訪問檔案
webSettings.setSupportZoom(true); // 支援縮放
webSettings.setLoadWithOverviewMode(true);
webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE); // 不載入快取內容
webView.setWebChromeClient(wvcc);
WebViewClient wvc = new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
webView.loadUrl(url);
return true;
}
};
webView.setWebViewClient(wvc);
webView.setWebChromeClient(new WebChromeClient() {
/*** 視訊播放相關的方法 **/
@Override
public View getVideoLoadingProgressView() {
FrameLayout frameLayout = new FrameLayout(WebVideoActivity.this);
frameLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
return frameLayout;
}
@Override
public void onShowCustomView(View view, CustomViewCallback callback) {
showCustomView(view, callback);
}
@Override
public void onHideCustomView() {
hideCustomView();
}
});
// 載入Web地址
webView.loadUrl(webUrl);
}
/** 視訊播放全屏 **/
private void showCustomView(View view, CustomViewCallback callback) {
// if a view already exists then immediately terminate the new one
if (customView != null) {
callback.onCustomViewHidden();
return;
}
WebVideoActivity.this.getWindow().getDecorView();
FrameLayout decor = (FrameLayout) getWindow().getDecorView();
fullscreenContainer = new FullscreenHolder(WebVideoActivity.this);
fullscreenContainer.addView(view, COVER_SCREEN_PARAMS);
decor.addView(fullscreenContainer, COVER_SCREEN_PARAMS);
customView = view;
setStatusBarVisibility(false);
customViewCallback = callback;
}
/** 隱藏視訊全屏 */
private void hideCustomView() {
if (customView == null) {
return;
}
setStatusBarVisibility(true);
FrameLayout decor = (FrameLayout) getWindow().getDecorView();
decor.removeView(fullscreenContainer);
fullscreenContainer = null;
customView = null;
customViewCallback.onCustomViewHidden();
webView.setVisibility(View.VISIBLE);
}
/** 全屏容器介面 */
static class FullscreenHolder extends FrameLayout {
public FullscreenHolder(Context ctx) {
super(ctx);
setBackgroundColor(ctx.getResources().getColor(android.R.color.black));
}
@Override
public boolean onTouchEvent(MotionEvent evt) {
return true;
}
}
private void setStatusBarVisibility(boolean visible) {
int flag = visible ? 0 : WindowManager.LayoutParams.FLAG_FULLSCREEN;
getWindow().setFlags(flag, WindowManager.LayoutParams.FLAG_FULLSCREEN);
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
/** 回退鍵 事件處理 優先順序:視訊播放全屏-網頁回退-關閉頁面 */
if (customView != null) {
hideCustomView();
} else if (webView.canGoBack()) {
webView.goBack();
} else {
finish();
}
return true;
default:
return super.onKeyUp(keyCode, event);
}
}
}
public void initWebView() { WebChromeClient wvcc = new WebChromeClient(); WebSettings webSettings = webView.getSettings(); webSettings.setJavaScriptEnabled(true); webSettings.setUseWideViewPort(