Android自定义应用抽屉Launcher

可以根据应用名称和安装时间进行排序，工程具体代码可以在我的GitHub上查看，链接见文末，效果图：

核心代码：

package com.zms.launcher;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import android.app.Activity;import android.app.AlertDialog;import android.content.ActivityNotFoundException;import android.content.BroadcastReceiver;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.content.IntentFilter;import android.content.pm.PackageManager;import android.content.pm.PackageManager.NameNotFoundException;import android.content.pm.ResolveInfo;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.PixelFormat;import android.graphics.drawable.Drawable;import android.net.Uri;import android.os.Bundle;import android.util.Log;import android.view.ContextMenu;import android.view.ContextMenu.ContextMenuInfo;import android.view.KeyEvent;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.AdapterContextMenuInfo;import android.widget.AdapterView.OnItemClickListener;import android.widget.EditText;import android.widget.GridView;import android.widget.Toast;{static DbOperation db = null;static List<App> appInfo = null;PackageManager packageManager = null;isEqual = false;List<ResolveInfo> apps = null;List<ResolveInfo> apps2 = null;String TAG = “ScrollLayoutTest”;private ScrollLayout mScrollLayout;APP_PAGE_SIZE = 36.0f;private Context mContext;int upCount;(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);mContext = this;setContentView(R.layout.main);mScrollLayout = (ScrollLayout) findViewById(R.id.ScrollLayoutTest);initViews();}(Menu menu) {// TODO Auto-generated method stubmenu.add(0, 1, 1, “● 默认排序[当前]”);menu.add(0, 2, 1, “○ 名称排序”);menu.add(0, 3, 1, “○ 时间排序”);menu.add(0, 4, 1, ” 关于应用”);menu.add(0, 5, 1, ” 更新桌面”);return super.onCreateOptionsMenu(menu);}(MenuItem item) {switch (item.getItemId()) {;case 2: // 名称排序Intent intent1 = new Intent(this, DeskByName.class);startActivity(intent1);break;case 3: // 按安装时间排序Intent intent2 = new Intent(this, DeskByTime.class);startActivity(intent2);break;case 4:// 关于Intent intent3 = new Intent(this, About.class);startActivity(intent3);break;case 5:// 更新桌面onCreate(null);break;default:}return super.onOptionsItemSelected(item);}() {packageManager = getPackageManager();final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);List<HashMap<String, Object>> items = new ArrayList<HashMap<String, Object>>();// get all appsapps = packageManager.queryIntentActivities(mainIntent, 0);for (ResolveInfo pi : apps) {HashMap<String, Object> map = new HashMap<String, Object>();PackageManager manager = this.getPackageManager();map.put(“appIcon”, pi.loadIcon(packageManager));map.put(“appName”, pi.loadLabel(packageManager).toString());map.put(“appPack”, pi.activityInfo.packageName);try {map.put(“appTime”, Long.toString(manager.getPackageInfo(pi.activityInfo.packageName, 0).firstInstallTime));} catch (NameNotFoundException e) {e.printStackTrace();}items.add(map);}// ToDBdb = new DbOperation(this);long countlong = db.getCount(); // 获取数据库中记录数目int countint = (int) countlong;upCount = items.size();// +++++++++++++++++++++++++++++++++++++++upCountif (countint == items.size()) {isEqual = true;// 若记录数目与当前items.size()相等，则不插入应用信息，只插入时间for (int m = 0; m < items.size(); m++) {// 插入时间：String appPack2 = (String) items.get(m).get(“appPack”);try {PackageManager manager = this.getPackageManager();String appTime2 = Long.toString(manager.getPackageInfo(appPack2, 0).firstInstallTime);db.insertTime(appTime2, appPack2);} catch (NameNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}}} else {// 若不等，则先清空表数据，然后再插入应用信息，然后插入时间db.deleteTable();for (int i = 0; i < items.size(); i++) {String appName = (String) items.get(i).get(“appName”);String appPack = (String) items.get(i).get(“appPack”);String appTime = (String) items.get(i).get(“Time”);App appInfo = new App(appName, appPack, appTime);DbOperation db = new DbOperation(this);db.insertApp(appInfo);// 插入时间：String appPack2 = (String) items.get(i).get(“appPack”);try {PackageManager manager = this.getPackageManager();String appTime2 = Long.toString(manager.getPackageInfo(appPack2, 0).firstInstallTime);db.insertTime(appTime2, appPack2);} catch (NameNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}// 读取数据库信息db = new DbOperation(this);if (orderFlag == 0) {appInfo = db.query(“appTable”);} else if (orderFlag == 1) {appInfo = db.queryByName(“appTable”);} else if (orderFlag == 2) {appInfo = db.queryByTime(“appTable”);}final int PageCount = (int) Math.ceil(apps.size() / APP_PAGE_SIZE);Log.e(TAG, “size:” + apps.size() + ” page:” + PageCount);for (int i = 0; i < PageCount; i++) {GridView appPage = new GridView(this);this.registerForContextMenu(appPage);appPage.setAdapter(new AppAdapter(this, appInfo, i, apps, items));appPage.setNumColumns(6);appPage.setOnItemClickListener(listener);mScrollLayout.addView(appPage);}}public OnItemClickListener listener = new OnItemClickListener() {(AdapterView<?> parent, View view, int position,long id) {GridView listView = (GridView) parent;App appInfo = (App) (listView.getItemAtPosition(position));String packName = appInfo.getPack();Intent mainIntent = mContext.getPackageManager().getLaunchIntentForPackage(packName);mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);try {mContext.startActivity(mainIntent);} catch (ActivityNotFoundException noFound) {Toast.makeText(mContext, “未发现该应用!”, Toast.LENGTH_SHORT).show();}}};(ContextMenu menu, View v,ContextMenuInfo menuInfo) {menu.setHeaderTitle(“操作”);menu.add(0, 1, Menu.NONE, “更名”);menu.add(0, 2, Menu.NONE, “卸载”);}(MenuItem item) {// 得到当前被选中的item信息AdapterContextMenuInfo menuInfo = (AdapterContextMenuInfo) item.getMenuInfo();final int a = menuInfo.position;switch (item.getItemId()) {case 1:final EditText e = new EditText(this);new AlertDialog.Builder(this).setTitle(“更名”)// .setIcon(R.drawable.logo2).setView(e).setPositiveButton(“确定”,new DialogInterface.OnClickListener() {(DialogInterface dialog,int i) {int b1 = mScrollLayout.getCurScreen();int num1 = b1 * 36 + a;String appName = appInfo.get(num1).getName();System.out.println(appName);String str = e.getText().toString();System.out.println(str);db.changeName(str, appName);// 更新界面onCreate(null);}}).setNegativeButton(“取消”, null).show();break;case 2:int b1 = mScrollLayout.getCurScreen();int num1 = b1 * 36 + a;String appPack = appInfo.get(num1).getPack();Uri uri = Uri.parse(“package:” + appPack);System.out.println(appPack);Intent intent = new Intent(Intent.ACTION_DELETE, uri);intent.setData(uri);// 设置获取到的URIdb.deleteApp(appPack);startActivity(intent);// break;default:// 更新+延时try {Thread.currentThread().sleep(300);onCreate(null);} catch (InterruptedException e22) {e22.printStackTrace();}onCreate(null);return super.onContextItemSelected(item);}return true;}(int keyCode, KeyEvent event) {// TODO Auto-generated method stubif (keyCode == KeyEvent.KEYCODE_BACK) {finish();return true;}return super.onKeyDown(keyCode, event);}class AppIntentReceiver extends BroadcastReceiver {(Context context, Intent intent) {onCreate(null);}}() {IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);filter.addAction(Intent.ACTION_PACKAGE_REMOVED);filter.addAction(Intent.ACTION_PACKAGE_CHANGED);filter.addDataScheme(“package”);registerReceiver(new AppIntentReceiver(), filter);}public static Bitmap drawableToBitmap(Drawable drawable) {// 取 drawable 的长宽int w = drawable.getIntrinsicWidth();int h = drawable.getIntrinsicHeight();// 取 drawable 的颜色格式Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888: Bitmap.Config.RGB_565;// 建立对应 bitmapBitmap bitmap = Bitmap.createBitmap(w, h, config);// 建立对应 bitmap 的画布Canvas canvas = new Canvas(bitmap);drawable.setBounds(0, 0, w, h);// 把 drawable 内容画到画布中drawable.draw(canvas);return bitmap;}() {// TODO Auto-generated method stubandroid.os.Process.killProcess(android.os.Process.myPid());super.onDestroy();// this.finish();}}

转载请注明出处：周木水的CSDN博客 我的GitHub：周木水的GitHub https://github.com/zhoumushui

，轻轻的风，吹开你紧锁的眉头，