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Code Issues Packages Projects Releases Wiki Activity

Set item offset in Postfragment when using StaggeredGridLayoutManager. Minor UI tweaks.

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This commit is contained in:
Alex Ning
2019-08-29 13:22:27 +08:00
parent 8f1d183858
commit c5a824ac89
9 changed files with 44 additions and 2 deletions
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37
app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
View File

@@ -7,11 +7,11 @@ import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Rect;
import android.os.Build;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.os.Handler;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
@@ -22,6 +22,7 @@ import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.DimenRes;
import androidx.annotation.NonNull;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.fragment.app.Fragment;
@@ -159,6 +160,9 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
} else {
mStaggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
mPostRecyclerView.setLayoutManager(mStaggeredGridLayoutManager);
StaggeredGridLayoutManagerItemOffsetDecoration itemDecoration =
new StaggeredGridLayoutManagerItemOffsetDecoration(activity, R.dimen.staggeredLayoutManagerItemOffset);
mPostRecyclerView.addItemDecoration(itemDecoration);
}
mGlide = Glide.with(activity);
@@ -583,4 +587,35 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
currentPosition = -1;
}
}
private static class StaggeredGridLayoutManagerItemOffsetDecoration extends RecyclerView.ItemDecoration {
private int mItemOffset;
StaggeredGridLayoutManagerItemOffsetDecoration(int itemOffset) {
mItemOffset = itemOffset;
}
StaggeredGridLayoutManagerItemOffsetDecoration(@NonNull Context context, @DimenRes int itemOffsetId) {
this(context.getResources().getDimensionPixelSize(itemOffsetId));
}
@Override
public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent,
@NonNull RecyclerView.State state) {
super.getItemOffsets(outRect, view, parent, state);
StaggeredGridLayoutManager.LayoutParams layoutParams = (StaggeredGridLayoutManager.LayoutParams) view.getLayoutParams();
int spanIndex = layoutParams.getSpanIndex();
int halfOffset = mItemOffset / 2;
if(spanIndex == 0) {
outRect.set(0, 0, halfOffset, 0);
} else {
outRect.set(halfOffset, 0, 0, 0);
}
}
}
}