我有Activity，其中包含RecyclerView。点击一个项目，我打开一个Full Screen Fragment。在Fragment里面我还有一个RecyclerView。点击Fragment中的一个项目后，我又开了一个新的Full Screen Fragment。但问题是新的Full Screen Fragment不可见。片段即将出现在屏幕上但不可见。
以下是活动的RecyclerView的适配器：
public class GameAdapter extends RecyclerView.Adapter<GameAdapter.MyViewHolder> {
private LayoutInflater inflater;
private Context context;
private List<String> gameList;
GameAdapter(Context context) {
this.context = context;
inflater = LayoutInflater.from(context);
gameList = new ArrayList<>();
}
public void getList(List<String> list) {
int currentSize = gameList.size();
gameList.clear();
gameList.addAll(list);
notifyItemRangeRemoved(0, currentSize);
notifyItemRangeInserted(0, list.size());
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.custom_row, parent, false);
return new MyViewHolder(view);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
holder.text.setText(gameList.get(position));
}
@Override
public int getItemCount() {
return gameList.size();
}
class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView text;
CardView gameCard;
public MyViewHolder(View itemView) {
super(itemView);
text = (TextView) itemView.findViewById(R.id.gameText);
gameCard = (CardView) itemView.findViewById(R.id.gameCard);
gameCard.setOnClickListener(this);
}
@Override
public void onClick(View view) {
LevelDialog dialog = new LevelDialog();
FragmentTransaction transaction = ((AppCompatActivity)context).getSupportFragmentManager().beginTransaction();
transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
transaction.add(android.R.id.content, dialog).addToBackStack(null).commit();
}
}
}
这是Fragment的RecyclerView的适配器：
public class LearningGameAdapter extends RecyclerView.Adapter<LearningGameAdapter.MyViewHolder> {
private LayoutInflater inflater;
private Context context;
private List<String> learnGameList;
Dialog dialog;
LearningGameAdapter(Context context, Dialog dialog) {
this.dialog = dialog;
this.context = context;
inflater = LayoutInflater.from(context);
learnGameList = new ArrayList<>();
}
void getGameList(List<String> gameList) {
int currentSize = learnGameList.size();
learnGameList.clear();
learnGameList.addAll(gameList);
notifyItemRangeRemoved(0, currentSize);
notifyItemRangeInserted(0, gameList.size());
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.custom_row, parent, false);
return new MyViewHolder(view);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
holder.levelName.setText(learnGameList.get(position));
}
@Override
public int getItemCount() {
return learnGameList.size();
}
class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView levelName;
CardView gameCard;
public MyViewHolder(View itemView) {
super(itemView);
levelName = (TextView) itemView.findViewById(R.id.gameText);
gameCard = (CardView) itemView.findViewById(R.id.gameCard);
gameCard.setOnClickListener(this);
}
@Override
public void onClick(View view) {
FirstFragment fragment = new FirstFragment();
Bundle bundle = new Bundle();
FragmentTransaction transaction = ((AppCompatActivity) context).getSupportFragmentManager().beginTransaction();
bundle.putInt("CurrentPosition", getAdapterPosition());
bundle.putString("GameType", "Learn");
fragment.setArguments(bundle);
transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
transaction.add(android.R.id.content, fragment).addToBackStack(null).commit();
//((AppCompatActivity) context).getSupportFragmentManager().popBackStack();
}
}
}
以下是Full Screen Fragment即使在屏幕上显示后仍然无法显示：
public class FirstFragment extends DialogFragment {
ConnectDotsView connectDotsView;
ImageView refreshCanvas, shareTrace, helpTrace;
int position = 0;
String gameType = "";
Toolbar toolbar;
TracingGames games;
KonfettiView konfettiView;
boolean isDrawn = false;
List<Point> points;
View.OnClickListener myListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.refreshCanvas:
isDrawn = false;
connectDotsView.clear();
connectDotsView.setPoints(points);
break;
case R.id.helpTrace:
HelpDialog dialog = new HelpDialog();
Bundle bundle = new Bundle();
bundle.putInt("Position", position);
bundle.putString("GameType",gameType);
dialog.setArguments(bundle);
dialog.show(getActivity().getSupportFragmentManager(), "HelpDialog");
break;
case R.id.shareTrace:
break;
}
}
};
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.first_fragment, container, false);
toolbar = (Toolbar) rootView.findViewById(R.id.toolbar);
((AppCompatActivity) getActivity()).setSupportActionBar(toolbar);
ActionBar actionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
actionBar.setHomeAsUpIndicator(android.R.drawable.ic_menu_close_clear_cancel);
}
setHasOptionsMenu(true);
return rootView;
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
position = getArguments().getInt("CurrentPosition");
Log.e("Position",position+"");
gameType = getArguments().getString("GameType");
Log.e("GameType",gameType);
connectDotsView = (ConnectDotsView) view.findViewById(R.id.connect_dots_view);
refreshCanvas = (ImageView) view.findViewById(R.id.refreshCanvas);
shareTrace = (ImageView) view.findViewById(R.id.shareTrace);
helpTrace = (ImageView) view.findViewById(R.id.helpTrace);
games = new TracingGames();
konfettiView = (KonfettiView) view.findViewById(R.id.viewKonfetti);
refreshCanvas.setOnClickListener(myListener);
shareTrace.setOnClickListener(myListener);
helpTrace.setOnClickListener(myListener);
connectDotsView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
Rect rect = new Rect();
int[] x = null;
int[] y = null;
if (gameType.equalsIgnoreCase("Learn")) {
switch (position) {
case 0:
x = games.getLevel1X();
y = games.getLevel1Y();
break;
case 1:
x = games.getLevel2X();
y = games.getLevel2Y();
break;
case 2:
x = games.getLevel3X();
y = games.getLevel3Y();
break;
case 3:
x = games.getLevel4X();
y = games.getLevel4Y();
break;
case 4:
x = games.getLevel5X();
y = games.getLevel5Y();
break;
case 5:
x = games.getLevel6X();
y = games.getLevel6Y();
break;
case 6:
x = games.getLevel7X();
y = games.getLevel7Y();
break;
case 7:
x = games.getLevel8X();
y = games.getLevel8Y();
break;
}
}else if(gameType.equalsIgnoreCase("Game")){
}
// Fist find the min and max value for x axis
int minX = x[0];
int maxX = x[0];
for (int i = 1; i <= x.length - 1; i++) {
if (maxX < x[i]) {
maxX = x[i];
}
if (minX > x[i]) {
minX = x[i];
}
}
// Find min and max vlaue for Y axis
int minY = y[0];
int maxY = y[0];
for (int i = 1; i <= y.length - 1; i++) {
if (maxY < y[i]) {
maxY = y[i];
}
if (minY > y[i]) {
minY = y[i];
}
}
connectDotsView.getLocalVisibleRect(rect);
Log.e("Width", rect.width() + "");
Log.e("Height", rect.height() + "");
Log.e("left", rect.left + "");
Log.e("right", rect.right + "");
Log.e("top", rect.top + "");
Log.e("bottom", rect.bottom + "");
// Find the scale factor based on the view you allocated in the screen
float scaleX = ((float) ((float) rect.width() / (float) maxX));
float scaleY = ((float) ((float) rect.height() / (float) maxY));
final float scale;
// Take the lowest scale factor
if (scaleX > scaleY) {
scale = scaleY;
} else {
scale = scaleX;
}
// find the left and top
int left = (rect.width() - ((int) ((float) maxX * scale)) - ((int) ((float) minX * scale))) / 2;
int top = (rect.height() - ((int) ((float) maxY * scale)) - ((int) ((float) minY * scale))) / 2;
// base on the above calculation draw in a view
List<Point> points = new ArrayList<>();
for (int i = 0, j = 0; i < x.length && j < y.length; i++, j++) {
Point p = new Point(((int) ((float) x[i] * scale)) + left, (int) ((float) y[j] * scale) + top);
points.add(p);
}
connectDotsView.clear();
FirstFragment.this.points = points;
connectDotsView.setPoints(points);
}
});
connectDotsView.setOnCompleteListener(new ConnectDotsView.CompleteListener() {
@Override
public void onCompleteListener() {
if (!isDrawn) {
isDrawn = true;
konfettiView.build()
.addColors(Color.parseColor("#764ba2"), Color.parseColor("#f5576c"), Color.parseColor("#43e97b"))
.setDirection(0.0, 359.0)
.setSpeed(0.5f, 3f)
.setFadeOutEnabled(true)
.setTimeToLive(2000L)
.addShapes(Shape.RECT, Shape.CIRCLE)
.addSizes(new Size(12, 5f))
.setPosition(-50f, konfettiView.getWidth() + 50f, -50f, -50f)
.stream(300, 2200L);
Log.e("Clear", "cleared");
}
}
});
}
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Dialog dialog = super.onCreateDialog(savedInstanceState);
//dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
return dialog;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
menu.clear();
getActivity().getMenuInflater().inflate(R.menu.main_menu, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == android.R.id.home) {
// handle close button click here
getActivity().getSupportFragmentManager().popBackStack();
return true;
}
return super.onOptionsItemSelected(item);
}
}
答案 0 :(得分：0)
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:cardElevation="3dp"
app:cardCornerRadius="3dp"
android:clickable="true">
<!-- Content -->
</android.support.v7.widget.CardView>
添加CardView作为您的父布局将起到作用。即使我曾经遇到过这个问题。
答案 1 :(得分：0)
简单... 保持片段布局在父布局中是“相对布局”