public void setOnLongPressListener(onLongPressExt longPress) { this .onLongPress = longPress; } public void NotifyDataChange() { removeAllViews(); } void bindView() { removeAllViews(); int count = adapter.getCount(); TableCell[] cell = null ; int j = 0 ; LinearLayout layout; tableRowsList = new ArrayList < HashMap < String, Object >> (); for ( int i = 0 ; i < count; i ++ ) { j ++ ; final int position = i; if (j > getColumnCount() || i == 0 ) { cell = new TableCell[getColumnCount()]; } final View view = adapter.getView(i, null , null ); view.setOnTouchListener( new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event ) { // TODO Auto-generated method stub unCheckPressed(); checkRowID = - 1 ; checkColumnID = - 1 ; if (onItemClickEvent != null ) { onItemClickEvent.onItemClick(position, event , view); } return false ; } }); view.setOnLongClickListener( new OnLongClickListener() { @Override public boolean onLongClick(View v) { if (onLongPress != null ) { onLongPress.onLongPress(v); } return true ; } }); cell[j - 1 ] = new TableCell(view); if (j == getColumnCount()) { lastRowCount = j; j = 0 ; HashMap < String, Object > map = new HashMap < String, Object > (); TableRow tr = new TableRow(cell); map.put( " tableRow " , tr); tableRowsList.add(map); layout = new LinearLayout(getContext()); addLayout(layout, cell, tr.getSize(), tr); } else if (i >= count - 1 && j > 0 ) { lastRowCount = j; HashMap < String, Object > map = new HashMap < String, Object > (); TableRow tr = new TableRow(cell); map.put( " tableRow " , tr); tableRowsList.add(map); layout = new LinearLayout(getContext()); addLayout(layout, cell, j, tr); } } } private void addLayout(LinearLayout layout, TableCell[] cell, int size, TableRow tr) { LinearLayout.LayoutParams params = new LinearLayout.LayoutParams( 130 , 110 ); layout.setGravity(Gravity.LEFT); layout.setOrientation(LinearLayout.HORIZONTAL); for ( int k = 0 ; k < size; k ++ ) { View remoteView = (View) tr.getCellValue(k).getValue(); layout.addView(remoteView, k, params ); } LinearLayout.LayoutParams firstParams = new LinearLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); firstParams.leftMargin = 60 ; addView(layout, firstParams); } public void setAdapter(AppsAdapter appsAdapter) { this .adapter = appsAdapter; this .setOrientation(LinearLayout.VERTICAL); bindView(); } public void checkPressed( int tableRowId, int tableRowColumnId) { ViewGroup view = (ViewGroup) this .getChildAt(tableRowId); checkColumnID = tableRowColumnId; checkRowID = tableRowId; changeImageState(view.getChildAt(tableRowColumnId), app); } public void onClick( int tableRowId, int tableRowColumnId, Context context) { LinearLayout view = (LinearLayout) ((ViewGroup) this .getChildAt(tableRowId)).getChildAt(tableRowColumnId); TextView tv = (TextView) view.findViewById(R.id.folder); final String[] name = tv.getText().toString().split( " - " ); Intent intent = null ; if (name[ 0 ].toString().equals( " com.android.contacts " )) { if (name[ 1 ].toString().equals( " com.android.contacts.DialtactsActivity " )) { intent = new Intent(Intent.ACTION_DIAL); } if (name[ 1 ].toString().equals( " com.android.contacts.DialtactsContactsEntryActivity " )) { intent = new Intent(Intent.ACTION_CALL_BUTTON); } } else { intent = getContext().getPackageManager() .getLaunchIntentForPackage(name[ 0 ].toString()); } context.startActivity(intent); } /* * * 改变图片状态 * * @param v * @param list */ private void changeImageState(View v, List < HashMap < String, Object >> list) { int size = list.size(); for ( int i = 0 ; i < size; i ++ ) { View view = (View) list. get (i). get ( " touch " ); view.setPressed( false ); list.remove(i); } v.setPressed( true ); HashMap < String, Object > map = new HashMap < String, Object > (); map.put( " touch " , v); list.add(map); } public void unCheckPressed() { if (checkColumnID != - 1 && checkRowID != - 1 ) { ViewGroup view = (ViewGroup) this .getChildAt(checkRowID); view.getChildAt(checkColumnID).setPressed( false ); } } public class TableRow { private TableCell[] cell; public TableRow(TableCell[] cell) { this .cell = cell; } public int getSize() { return cell.length; } public TableCell getCellValue( int index) { if (index >= getSize()) { return null ; } return cell[index]; } public int getCellCount() { return cell.length; } public int getLastCellCount() { return lastRowCount; } } static public class TableCell { private Object value; public TableCell(Object value) { this .value = value; } public Object getValue() { return value; } } } 每行显示的LAYOUT文件: < LinearLayout android:orientation ="vertical" android:background ="@drawable/lessbtn" android:gravity ="center" android:layout_width ="fill_parent" android:id ="@+id/grid_layout" android:layout_height ="fill_parent" xmlns:android ="https://schemas.android.com/apk/res/android" > < ImageView android:id ="@+id/btn_appicon" android:layout_width ="55dip" android:layout_height ="55dip" ></ ImageView > < TextView android:id ="@+id/tv_name" android:layout_width ="wrap_content" android:textColor ="#030303" android:layout_height ="wrap_content" ></ TextView > < TextView android:id ="@+id/folder" android:layout_width ="wrap_content" android:visibility ="invisible" android:layout_height ="wrap_content" ></ TextView > </ LinearLayout >
完成这一系列的编写后,你就可以在xml直接写或者在JAVA文件里面new 出来,但注意要设置它每列显示的个数。
下篇将讲述如何实现手势切屏,如何实现分页显示数据,如何实现封装分页控件。