Java：需要一些方法来缩短此代码
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Java: Need some way to shorten this code
提问by Shouvik
I have this piece of code that I would like to shorten...
我有一段我想缩短的代码......
PackageManager p = context.getPackageManager();
final List<PackageInfo> appinstall = p.getInstalledPackages(PackageManager.GET_PERMISSIONS);
PackageManager pro = context.getPackageManager();
final List<PackageInfo> apllprovides = pro.getInstalledPackages(PackageManager.GET_PROVIDERS);
I am seriously irritated to do this again and again to add new flag permissions, and I need to do it a couple of times, is there a shorter method in which I could put all the flags on the same definition...???
我非常恼火一次又一次地这样做以添加新的标志权限，我需要这样做几次，是否有更短的方法可以将所有标志放在相同的定义上......？？？
Let me put it this way, can I do this...??? (of course this gives an error, but something similar..)
让我这样说，我可以这样做吗......？（当然这会产生错误，但类似的东西..）
PackageManager p = context.getPackageManager();
final List<PackageInfo> appinstall = p.getInstalledPackages(PackageManager.GET_PERMISSIONS).addFlag(PackageManager.GET_PROVIDERS);
采纳答案by cjk
If it's the same syntax as C# and the flags are set properly, you could do this:
如果它的语法与 C# 相同并且标志设置正确，则可以执行以下操作：
PackageManager p = context.getPackageManager();
final List<PackageInfo> appinstall =
p.getInstalledPackages(PackageManager.GET_PERMISSIONS |
PackageManager.GET_PROVIDERS)
回答by zhocker
public void usegetPackageInfo(){
//
final ListView lw = (ListView) findViewById(R.id.listView1);
PackageManager p = lw.getContext().getPackageManager();
final List<PackageInfo> appinstall =
p.getInstalledPackages(PackageManager.GET_PERMISSIONS |
PackageManager.GET_PROVIDERS);
final TextView tw = (TextView) findViewById(R.id.textView1);
Iterator it = appinstall.iterator();
while (it.hasNext()) {
PackageInfo rf = (PackageInfo) it.next();
tw.append(rf.toString());
}
}
回答by Praveen
check the android Documentation: for permissions: http://developer.android.com/guide/topics/manifest/uses-permission-element.html
检查android文档：权限：http: //developer.android.com/guide/topics/manifest/uses-permission-element.html
for providers: http://developer.android.com/guide/topics/manifest/provider-element.html
对于提供者：http: //developer.android.com/guide/topics/manifest/provider-element.html
Before that Completely study about manifest documentation
在此之前 彻底研究清单文件
