【Android】獲取手機中已安裝apk文件信息(PackageInfo、ResolveInfo)(應用圖片、應用 ...

衆所周知，通過PackageManager可以獲取手機端已安裝的apk文件的信息，具體代碼如下：

PackageManager packageManager = this.getPackageManager();
List<PackageInfo> packageInfoList = packageManager.getInstalledPackages(0);

 

/**
 * 查詢手機內非系統應用
 * @param context
 * @return
 */
public static List<PackageInfo> getAllApps(Context context) {
List<PackageInfo> apps = new ArrayList<PackageInfo>();
PackageManager pManager = context.getPackageManager();
//獲取手機內所有應用
List<PackageInfo> paklist = pManager.getInstalledPackages(0);
for (int i = 0; i < paklist.size(); i++) {
PackageInfo pak = (PackageInfo) paklist.get(i);
//判斷是否爲非系統預裝的應用程序
if ((pak.applicationInfo.flags & pak.applicationInfo.FLAG_SYSTEM) <= 0) {
// customs applications
apps.add(pak);
}
}
return apps;
}
獲取圖片、應用名、包名:
                    PackageManager pManager = MessageSendActivity.this.getPackageManager();
                    List<PackageInfo> appList  = Utils.getAllApps(MessageSendActivity.this);
                    for(int i=0;i<appList.size();i++) {
                    PackageInfo pinfo = appList.get(i);
                    ShareItemInfo shareItem = new ShareItemInfo();
                    //set Icon
                    shareItem.setIcon(pManager.getApplicationIcon(pinfo.applicationInfo));
                    //set Application Name
                    shareItem.setLabel(pManager.getApplicationLabel(pinfo.applicationInfo).toString());
                    //set Package Name
                    shareItem.setPackageName(pinfo.applicationInfo.packageName);
                    }

獲取支持分享的應用的代碼：

/**
 * 查詢手機內所有支持分享的應用
 * @param context
 * @return
 */
public static List<ResolveInfo> getShareApps(Context context){
    List<ResolveInfo> mApps = new ArrayList<ResolveInfo>();
    Intent intent=new Intent(Intent.ACTION_SEND,null);
    intent.addCategory(Intent.CATEGORY_DEFAULT);
    intent.setType("text/plain");
    PackageManager pManager = context.getPackageManager();
    mApps = pManager.queryIntentActivities(intent,PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);
    return mApps;
}
//由於該方法，返回的並不是 PackageInfo 對象。而是 ResolveInfo。因此獲取圖片、應用名、包名的方法不一樣，如下：
                    PackageManager pManager = MessageSendActivity.this.getPackageManager();
                    /*********************查詢手機內所有支持分享的應用*********************/
                    List<ResolveInfo> resolveList  = Utils.getShareApps(MessageSendActivity.this);
                    for(int i=0;i<resolveList.size();i++) {
                    ResolveInfo resolve = resolveList.get(i);
                    ShareItemInfo shareItem = new ShareItemInfo();
                    //set Icon
                    shareItem.setIcon(resolve.loadIcon(pManager));
                    //set Application Name
                    shareItem.setLabel(resolve.loadLabel(pManager).toString());
                    //set Package Name
                    shareItem.setPackageName(resolve.activityInfo.packageName);
                    }

總結：
通過 PackageInfo  獲取具體信息方法：
包名獲取方法：packageInfo.packageName
icon獲取獲取方法：packageManager.getApplicationIcon(applicationInfo)
應用名稱獲取方法：packageManager.getApplicationLabel(applicationInfo)
使用權限獲取方法：packageManager.getPackageInfo(packageName,PackageManager.GET_PERMISSIONS)
.requestedPermissions
通過 ResolveInfo 獲取具體信息方法：
包名獲取方法：resolve.activityInfo.packageName
icon獲取獲取方法：resolve.loadIcon(packageManager)
應用名稱獲取方法：resolve.loadLabel(packageManager).toString()