如何解决水平滚动网格视图
| 我知道在Android中不可能水平滚动网格视图。但是我正在做的是在水平滚动视图内动态添加图像按钮，如下所示：public class HorizontalScroller extends Activity {
static int l=0;
private Rect mTempRect = new Rect();
static int r1=0;
static int t=0;
static int b=0;
static int x=0;
static int y=0;
//Button[] b1 = new Button[100];
ImageButton btn[][] = new ImageButton[10][10];
//ImageButton b1 = new ImageButton(this);
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LinearLayout rl = (LinearLayout)findViewById(R.id.widget92);
LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
for(int i=0;i<4;i++)
{
for(int j=0;j<10;j++)
{System.out.println(\"helo\");
/* l=l+100;
r1=r1+100;
t=t+100;
b=b+100;*/
//button();
//ImageButton btn=new ImageButton(this);
/* Rect r = mTempRect;
r.left=10;
r.top=10;
r.right=10;
r.bottom=10;
btn[i][j].getDrawingRect(r);*/
//btn[i][j].setId(j);
Rect r = mTempRect;
r.set(0,0);
Rect r2 = mTempRect;
r2.set(0,20,20);
btn[i][j]=new ImageButton(this);
btn[i][j]. setBackgroundResource(R.drawable.icon);
btn[i][j].setMinimumWidth(20);
btn[i][j].setMinimumHeight(20);
params1.setMargins(5,5,5);
rl.addView(btn[i][j],params1);
System.out.println(\"1=\"+btn[i][j].getTop());
System.out.println(\"2=\"+btn[i][j].getLeft());
System.out.println(\"3=\"+btn[i][j].getRight());
System.out.println(\"4=\"+btn[i][j].getBottom());
}
}
}
}
解决方法
您可以
在
HorizontalScrollView
TableLayout
LinearLayout
LinearLayout
System.out
/dev/null
Log.d
public void horizontalScrollGalleryLayout () {
HorizontalScrollView sv = new HorizontalScrollView(this);
LinearLayout llh = new LinearLayout(this);
llh.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams layoutParamsTV = new LinearLayout.LayoutParams(40,40);
LinearLayout.LayoutParams layoutParamsLL = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);
for (int i=0; i<20; i++) {
LinearLayout llv = new LinearLayout(this);
llv.setOrientation(LinearLayout.VERTICAL);
TestView testView1 = new TestView(this,Color.rgb(i*12,0));
TestView testView2 = new TestView(this,true,i*12,0));
TestView testView3 = new TestView(this,Color.rgb(0,0));
llv.addView(testView1,layoutParamsTV);
llv.addView(testView2,layoutParamsTV);
llv.addView(testView3,layoutParamsTV);
llh.addView(llv,layoutParamsLL);
}
sv.addView(llh,layoutParamsLL);
setContentView(sv);
}
public class TestView extends View {
Context context;
int color;
public TestView(Context context,int color) {
super(context);
this.context = context;
this.color = color;
}
@Override
public void onDraw (Canvas canvas) {
super.onDraw(canvas);
this.setBackgroundColor(Color.LTGRAY);
Paint paint = new Paint (Paint.ANTI_ALIAS_FLAG);
paint.setColor(color);
canvas.drawCircle(20,20,paint);
}
}
<HorizontalScrollView
android:layout_width=\"match_parent\"
android:layout_height=\"wrap_content\">
<LinearLayout
android:layout_width=\"match_parent\"
android:layout_height=\"wrap_content\"
android:orientation=\"horizontal\">
<GridView
android:id=\"@+id/gridView\"
android:layout_width=\"match_parent\"
android:layout_height=\"wrap_content\">
</GridView>
</LinearLayout>
</HorizontalScrollView>
GridView gridView = (GridView) findViewById(R.id.gridView);
gridView.setNumColumns(arrayList.size());
GridViewAdapter gridViewAdapter = new GridViewAdapter(mContext,arrayList);
gridView.setAdapter(gridViewAdapter);
// Set dynamic width of Gridview
setDynamicWidth(gridView);
private void setDynamicWidth(GridView gridView) {
ListAdapter gridViewAdapter = gridView.getAdapter();
if (gridViewAdapter == null) {
return;
}
int totalWidth;
int items = gridViewAdapter.getCount();
View listItem = gridViewAdapter.getView(0,null,gridView);
listItem.measure(0,0);
totalWidth = listItem.getMeasuredWidth();
totalWidth = totalWidth*items;
ViewGroup.LayoutParams params = gridView.getLayoutParams();
params.width = totalWidth;
gridView.setLayoutParams(params);
}
dependencies {
compile \'com.android.support:leanback-v17:23.1.0\'
}
<!-- your stuff before... -->
<android.support.v17.leanback.widget.HorizontalGridView
android:layout_width=\"wrap_content\"
android:layout_height=\"80dp\"
android:id=\"@+id/gridView\"
/>
<!-- your stuff after... -->
<?xml version=\"1.0\" encoding=\"utf-8\"?>
<LinearLayout xmlns:android=\"http://schemas.android.com/apk/res/android\"
android:orientation=\"vertical\" android:layout_width=\"match_parent\"
android:layout_height=\"match_parent\">
<Button
android:layout_width=\"wrap_content\"
android:layout_height=\"wrap_content\"
android:text=\"New Button\"
android:id=\"@+id/button\" />
</LinearLayout>
public class GridElementAdapter extends RecyclerView.Adapter<GridElementAdapter.SimpleViewHolder>{
private Context context;
private List<String> elements;
public GridElementAdapter(Context context){
this.context = context;
this.elements = new ArrayList<String>();
// Fill dummy list
for(int i = 0; i < 40 ; i++){
this.elements.add(i,\"Position : \" + i);
}
}
public static class SimpleViewHolder extends RecyclerView.ViewHolder {
public final Button button;
public SimpleViewHolder(View view) {
super(view);
button = (Button) view.findViewById(R.id.button);
}
}
@Override
public SimpleViewHolder onCreateViewHolder(ViewGroup parent,int viewType) {
final View view = LayoutInflater.from(this.context).inflate(R.layout.grid_element,parent,false);
return new SimpleViewHolder(view);
}
@Override
public void onBindViewHolder(SimpleViewHolder holder,final int position) {
holder.button.setText(elements.get(position));
holder.button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(context,\"Position =\" + position,Toast.LENGTH_SHORT).show();
}
});
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getItemCount() {
return this.elements.size();
}
}
private HorizontalGridView horizontalGridView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.your_activity);
horizontalGridView = (HorizontalGridView) findViewById(R.id.gridView);
GridElementAdapter adapter = new GridElementAdapter(this);
horizontalGridView.setAdapter(adapter);
}
your recycle view.setLayoutManager(new GridLayoutManager(getActivity(),2,LinearLayoutManager.HORIZONTAL,false))
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