获取已安装程序的名字、包名、版本和图标：
获取已安装程序的名字、包名、版本和图标：
Java代码 1.class PInfo {
2. private String appname = "";
3. private String pname = "";
4. private String versionName = "";
5. private int versionCode = 0;
6. private Drawable icon;
7. private void prettyPrint() {
8. log(appname + "\t" + pname + "\t" + versionName + "\t" + versionCode + "\t");
9. }
10.}
11.
12.private void listPackages() {
13. ArrayList<PInfo> apps = getInstalledApps(false); /* false = no system packages */
14. final int max = apps.size();
15. for (int i=0; i<max; i++) {
16. apps.get(i).prettyPrint();
17. }
18.}
19.
20.private ArrayList<PInfo> getInstalledApps(boolean getSysPackages) {
21. ArrayList<PInfo> res = new ArrayList<PInfo>();
22. List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
23. for(int i=0;i<packs.size();i++) {
24. PackageInfo p = packs.get(i);
25. if ((!getSysPackages) && (p.versionName == null)) {
26. continue ;
27. }
28. PInfo newInfo = new PInfo();
29. newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString();
30. newInfo.pname = p.packageName;
31. newInfo.versionName = p.versionName;
32. newInfo.versionCode = p.versionCode;
33. newInfo.icon = p.applicationInfo.loadIcon(getPackageManager());
34. res.add(newInfo);
35. }
36. return res;
37.}
获取未安装的APK信息：
在前面的文章发过一篇《获取已安装程序的名字、包名、版本和图标》，当时有朋友问我怎么获取未安装的APK信息（如：软件名称、包名、图标等等）。当时还不知道能读取未安装的APK信息，也没遇到这样的需求，所以也没去看怎么做。现在终于知道了，很简单。看代码会比较明了。
Java代码 1./** 获取未安装的APK信息
2. * @param context
3. * @param archiveFilePath APK文件的路径。如：/sdcard/download/XX.apk
4. */
5. public void getUninatllApkInfo(Context context, String archiveFilePath){
6. PackageManager pm = context.getPackageManager();
7. PackageInfo info = pm.getPackageArchiveInfo(archiveFilePath, PackageManager.GET_ACTIVITIES);
8. if(info != null){
9. ApplicationInfo appInfo = info.applicationInfo;
10. String appName = pm.getApplicationLabel(appInfo).toString();
11. String packageName = appInfo.packageName;
12. Drawable icon = pm.getApplicationIcon(appInfo);
13. }
14. }
