[英]MediaController Play Icon to change to Pause Icon programmatically
[英]Change MediaController icons programmatically
如何以編程方式更改MediaController
圖標? 我的意思是播放/暫停/前進和后退 。
您會看到我已添加了全屏按鈕,但不知道如何更改這三個按鈕。
自定義MediaController類:
public class CustomVideoController extends MediaController {
public static boolean full = false;
private ImageButton fullScreenBtn;
Context mContext;
Activity activity;
VideoView mVideoView;
public CustomVideoController(Context context, Activity activity, VideoView videoView) {
super(new ContextThemeWrapper(context, R.style.VideoPlayerTheme));
this.activity = activity;
mContext = context;
mVideoView = videoView;
}
@Override
public void setAnchorView(View view) {
super.setAnchorView(view);
FrameLayout.LayoutParams frameParams = new FrameLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
frameParams.gravity = Gravity.RIGHT | Gravity.TOP;
frameParams.setMargins(12,14,10,12);
View v = AddFullScreenBtn();
addView(v, frameParams);
}
@Override
public void hide() {
super.hide();
}
@Override
public void show(int timeout) {
super.show(0);
}
private View AddFullScreenBtn() {
fullScreenBtn = new ImageButton(mContext);
if (full)
fullScreenBtn.setImageResource(R.drawable.ic_media_fullscreen_stretch);
else
fullScreenBtn.setImageResource(R.drawable.ic_media_fullscreen_shrink);
fullScreenBtn.setBackgroundColor(Color.WHITE);
fullScreenBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (full){
fullScreenBtn.setImageResource(R.drawable.ic_media_fullscreen_stretch);
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
full = false;
} else {
fullScreenBtn.setImageResource(R.drawable.ic_media_fullscreen_shrink);
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
full = true;
}
}
});
return fullScreenBtn;
}
請幫助我更改這些圖標的可繪制對象。 有可能嗎? 我真的很困惑。
如果我對您的理解正確,那么您正在使用android.widget.MediaControleller
。 在這種情況下,無法更改布局按鈕。 這就是原因(下面的代碼來自MediaController.class ):
/**
* Create the view that holds the widgets that control playback.
* Derived classes can override this to create their own.
* @return The controller view.
* @hide This doesn't work as advertised
*/
protected View makeControllerView() {
LayoutInflater inflate = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mRoot = inflate.inflate(com.android.internal.R.layout.media_controller, null);
initControllerView(mRoot);
return mRoot;
}
如您所見,它使用私有方法來縫合和膨脹其視圖。
我最近遇到了同樣的問題,並且有一個棘手的方法來更改它。 首先,將MediaController類擴展為客戶類,然后按如下所示重寫setAnchorView()。 不太確定它是否足夠安全。
public class MyMediaController extends MediaController {
public MyMediaController(Context context, AttributeSet attrs) {
super(context, attrs);
}
public MyMediaController(Context context, boolean useFastForward) {
super(context, useFastForward);
}
public MyMediaController(Context context) {
super(context);
}
@Override
public void setAnchorView(View view) {
super.setAnchorView(view);
//find the control buttons
for(int index = 0; index< getChildCount(); ++index) {
View nextChild = getChildAt(index);
if (nextChild instanceof LinearLayout)
{
LinearLayout linearLayout = (LinearLayout)nextChild;
for (int i = 0; i < linearLayout.getChildCount(); i++)
{
if (i == 0 && linearLayout.getChildAt(i) instanceof LinearLayout)
{
LinearLayout linearLayoutControlPanel = (LinearLayout)linearLayout.getChildAt(i);
int len = linearLayoutControlPanel.getChildCount();
if (len > 0) {
// index = 0, pre button, just hide it
View buttonPre = linearLayoutControlPanel.getChildAt(0);
if (buttonPre instanceof ImageButton) {
buttonPre.setVisibility(INVISIBLE);
}
// index = len - 1, next button, change icon to fullscreen
View buttonNex = linearLayoutControlPanel.getChildAt(len - 1);
if (buttonNex instanceof ImageButton) {
((ImageButton) buttonNex).setImageDrawable(ContextCompat.getDrawable(getContext(), R.drawable.ic_fullscreen));
}
}
}
}
}
}
}
}
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