| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.example.android.apis.view; |
| |
| import com.example.android.apis.R; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.ResolveInfo; |
| import android.os.Bundle; |
| import android.view.ActionMode; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.BaseAdapter; |
| import android.widget.Checkable; |
| import android.widget.FrameLayout; |
| import android.widget.GridView; |
| import android.widget.ImageView; |
| |
| import java.util.List; |
| |
| /** |
| * This demo illustrates the use of CHOICE_MODE_MULTIPLE_MODAL, a.k.a. selection mode on GridView. |
| */ |
| public class Grid3 extends Activity { |
| |
| GridView mGrid; |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| loadApps(); |
| |
| setContentView(R.layout.grid_1); |
| mGrid = (GridView) findViewById(R.id.myGrid); |
| mGrid.setAdapter(new AppsAdapter()); |
| mGrid.setChoiceMode(GridView.CHOICE_MODE_MULTIPLE_MODAL); |
| mGrid.setMultiChoiceModeListener(new MultiChoiceModeListener()); |
| } |
| |
| private List<ResolveInfo> mApps; |
| |
| private void loadApps() { |
| Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); |
| mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); |
| |
| mApps = getPackageManager().queryIntentActivities(mainIntent, 0); |
| } |
| |
| public class AppsAdapter extends BaseAdapter { |
| public AppsAdapter() { |
| } |
| |
| public View getView(int position, View convertView, ViewGroup parent) { |
| CheckableLayout l; |
| ImageView i; |
| |
| if (convertView == null) { |
| i = new ImageView(Grid3.this); |
| i.setScaleType(ImageView.ScaleType.FIT_CENTER); |
| i.setLayoutParams(new ViewGroup.LayoutParams(50, 50)); |
| l = new CheckableLayout(Grid3.this); |
| l.setLayoutParams(new GridView.LayoutParams(GridView.LayoutParams.WRAP_CONTENT, |
| GridView.LayoutParams.WRAP_CONTENT)); |
| l.addView(i); |
| } else { |
| l = (CheckableLayout) convertView; |
| i = (ImageView) l.getChildAt(0); |
| } |
| |
| ResolveInfo info = mApps.get(position); |
| i.setImageDrawable(info.activityInfo.loadIcon(getPackageManager())); |
| |
| return l; |
| } |
| |
| |
| public final int getCount() { |
| return mApps.size(); |
| } |
| |
| public final Object getItem(int position) { |
| return mApps.get(position); |
| } |
| |
| public final long getItemId(int position) { |
| return position; |
| } |
| } |
| |
| public class CheckableLayout extends FrameLayout implements Checkable { |
| private boolean mChecked; |
| |
| public CheckableLayout(Context context) { |
| super(context); |
| } |
| |
| public void setChecked(boolean checked) { |
| mChecked = checked; |
| setBackgroundDrawable(checked ? |
| getResources().getDrawable(R.drawable.blue) |
| : null); |
| } |
| |
| public boolean isChecked() { |
| return mChecked; |
| } |
| |
| public void toggle() { |
| setChecked(!mChecked); |
| } |
| |
| } |
| |
| public class MultiChoiceModeListener implements GridView.MultiChoiceModeListener { |
| public boolean onCreateActionMode(ActionMode mode, Menu menu) { |
| mode.setTitle("Select Items"); |
| mode.setSubtitle("One item selected"); |
| return true; |
| } |
| |
| public boolean onPrepareActionMode(ActionMode mode, Menu menu) { |
| return true; |
| } |
| |
| public boolean onActionItemClicked(ActionMode mode, MenuItem item) { |
| return true; |
| } |
| |
| public void onDestroyActionMode(ActionMode mode) { |
| } |
| |
| public void onItemCheckedStateChanged(ActionMode mode, int position, long id, |
| boolean checked) { |
| int selectCount = mGrid.getCheckedItemCount(); |
| switch (selectCount) { |
| case 1: |
| mode.setSubtitle("One item selected"); |
| break; |
| default: |
| mode.setSubtitle("" + selectCount + " items selected"); |
| break; |
| } |
| } |
| |
| } |
| } |