android开发之开源项目SwipeListView之使用

如今的IT界,越来越多的贡献者把自己的项目和经验都分享出来了,这使我们后来者或者是说有的知识点不懂的菜鸟们来说,可谓是福利和福音!在此,我感谢oschina,csdn,apkbus...等等IT网站;他们为我们指明了方向,照亮了前进的大路!

那么,在此给大家分享一下我在我的项目中,引用的一个开源项目(SwipeListView),该框架类似于QQ左滑出现"删除"的效果,如图1-1;:

图 1-1

首先,给大家展示我们将要做出来的效果,如图1-2:

图 1-2

第一步:请登录https://github.com/baoyongzhang/SwipeMenuListView网址,下载github上的开源项目.

第二步:将下载下来的项目解压出来,你不妨看到如图1-3:

图 1-3

第三步:将这两个项目,分别导入到Eclipse工程当中,将library项目作为sample(或者是你自己的项目,这里我们不将此类库作为我的项目的依赖库)项目的依赖库,如图1-4:

图 1-4

第四步:请打开library项目中的libs文件夹,将其中的"android-support-v4.jar"拷贝到你自己的项目中的libs文件夹中,不然有的类你是无法使用的.

第五步:将library项目中的java文件全都拷贝到你的项目当中,你可以新建一个包,将其存储,如图1-5:

图 1-5

第六步:在layout文件当中引用自定义SwipeListView类:

<com.baoyz.swipemenulistview.SwipeMenuListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

第七步:新建一个Activity类编写如下代码:

public class SimpleActivity extends Activity {

	private List<ApplicationInfo> mAppList;
	private AppAdapter mAdapter;
	private SwipeMenuListView mListView;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_list);

		mAppList = getPackageManager().getInstalledApplications(0);

		mListView = (SwipeMenuListView) findViewById(R.id.listView);
		mAdapter = new AppAdapter();
		mListView.setAdapter(mAdapter);

		// step 1. create a MenuCreator
		SwipeMenuCreator creator = new SwipeMenuCreator() {

			@Override
			public void create(SwipeMenu menu) {
				// create "open" item
				SwipeMenuItem openItem = new SwipeMenuItem(getApplicationContext());
				// set item background
				openItem.setBackground(new ColorDrawable(Color.rgb(0xC9, 0xC9, 0xCE)));
				// set item width
				openItem.setWidth(dp2px(90));
				// set item title
				openItem.setTitle("Open");
				// set item title fontsize
				openItem.setTitleSize(18);
				// set item title font color
				openItem.setTitleColor(Color.WHITE);
				// add to menu
				menu.addMenuItem(openItem);

				// create "delete" item
				SwipeMenuItem deleteItem = new SwipeMenuItem(getApplicationContext());
				// set item background
				deleteItem.setBackground(new ColorDrawable(Color.rgb(0xF9, 0x3F, 0x25)));
				// set item width
				deleteItem.setWidth(dp2px(90));
				// set a icon
				deleteItem.setIcon(R.drawable.ic_delete);
				// add to menu
				menu.addMenuItem(deleteItem);
			}
		};
		// set creator
		mListView.setMenuCreator(creator);

		// step 2. listener item click event
		mListView.setOnMenuItemClickListener(new OnMenuItemClickListener() {
			@Override
			public boolean onMenuItemClick(int position, SwipeMenu menu, int index) {
				ApplicationInfo item = mAppList.get(position);
				switch (index) {
				case 0:
					// open
					open(item);
					break;
				case 1:
					// delete
//					delete(item);
					mAppList.remove(position);
					mAdapter.notifyDataSetChanged();
					break;
				}
				return false;
			}
		});
		
		// set SwipeListener
		mListView.setOnSwipeListener(new OnSwipeListener() {
			
			@Override
			public void onSwipeStart(int position) {
				// swipe start
			}
			
			@Override
			public void onSwipeEnd(int position) {
				// swipe end
			}
		});

		// 其他设置
		//listView.setCloseInterpolator(new BounceInterpolator());
		
		// item的长按事件
		mListView.setOnItemLongClickListener(new OnItemLongClickListener() {

			@Override
			public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
				Toast.makeText(getApplicationContext(), position + " long click", 0).show();
				return false;
			}
		});
		
	}
        //删除App应用
	private void delete(ApplicationInfo item) {
		// delete app
		try {
			Intent intent = new Intent(Intent.ACTION_DELETE);
			intent.setData(Uri.fromParts("package", item.packageName, null));
			startActivity(intent);
		} catch (Exception e) {
		}
	}
        //打开App应用
	private void open(ApplicationInfo item) {
		// open app
		Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
		resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
		resolveIntent.setPackage(item.packageName);
		List<ResolveInfo> resolveInfoList = getPackageManager()
				.queryIntentActivities(resolveIntent, 0);
		if (resolveInfoList != null && resolveInfoList.size() > 0) {
			ResolveInfo resolveInfo = resolveInfoList.get(0);
			String activityPackageName = resolveInfo.activityInfo.packageName;
			String className = resolveInfo.activityInfo.name;

			Intent intent = new Intent(Intent.ACTION_MAIN);
			intent.addCategory(Intent.CATEGORY_LAUNCHER);
			ComponentName componentName = new ComponentName(activityPackageName, className);

			intent.setComponent(componentName);
			startActivity(intent);
		}
	}

	class AppAdapter extends BaseAdapter {

		@Override
		public int getCount() {
			return mAppList.size();
		}

		@Override
		public ApplicationInfo getItem(int position) {
			return mAppList.get(position);
		}

		@Override
		public long getItemId(int position) {
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			if (convertView == null) {
				convertView = View.inflate(getApplicationContext(),R.layout.item_list_app, null);
				new ViewHolder(convertView);
			}
			ViewHolder holder = (ViewHolder) convertView.getTag();
			ApplicationInfo item = getItem(position);
			holder.iv_icon.setImageDrawable(item.loadIcon(getPackageManager()));
			holder.tv_name.setText(item.loadLabel(getPackageManager()));
			return convertView;
		}

		class ViewHolder {
			ImageView iv_icon;
			TextView tv_name;

			public ViewHolder(View view) {
				iv_icon = (ImageView) view.findViewById(R.id.iv_icon);
				tv_name = (TextView) view.findViewById(R.id.tv_name);
				view.setTag(this);
			}
		}
	}

	private int dp2px(int dp) {
		return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics());
	}
}

注:一定不要在你的Adapter当中写任何事件,这样会影响SwipeListView对事件的处理,效果就不会出来.

以上没有将library项目作为我的项目的依赖库,而是将此类库融合到了我的项目当中,这样感觉高大上一些!