请帮助...我是Android开发的新手...我有搜索我的问题，但没有得到任何解决方案...我也尝试了：不明白
我有一个已安装的应用程序的列表，因此现在我想在单击它时在文本视图中显示每个应用程序的所有权限
所有已安装的应用的列表：
主要活动：
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView userInstalledApps = (ListView)findViewById(R.id.installed_app_list);
List<AppList> installedApps = getInstalledApps();
AppAdapter installedAppAdapter = new AppAdapter(MainActivity.this, installedApps);
userInstalledApps.setAdapter(installedAppAdapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private List<AppList> getInstalledApps() {
List<AppList> res = new ArrayList<AppList>();
List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
for (int i = 0; i < packs.size(); i++) {
PackageInfo p = packs.get(i);
if ((isSystemPackage(p) == false)) {
String appName = p.applicationInfo.loadLabel(getPackageManager()).toString();
Drawable icon = p.applicationInfo.loadIcon(getPackageManager());
res.add(new AppList(appName, icon));
}
}
return res;
}
private boolean isSystemPackage(PackageInfo pkgInfo) {
return ((pkgInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) ? true : false;
}
}
应用程序类：
public class AppList {
private String name;
Drawable icon;
public AppList(String name, Drawable icon) {
this.name = name;
this.icon = icon;
}
public String getName() {
return name;
}
public Drawable getIcon() {
return icon;
}
}
appadapter：
public class AppAdapter extends BaseAdapter {
private LayoutInflater layoutInflater;
private List<AppList> listStorage;
public AppAdapter(Context context, List<AppList> customizedListView) {
layoutInflater =(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
listStorage = customizedListView;
}
@Override
public int getCount() {
return listStorage.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder listViewHolder;
if(convertView == null){
listViewHolder = new ViewHolder();
convertView = layoutInflater.inflate(R.layout.installed_app_list, parent, false);
listViewHolder.textInListView = (TextView)convertView.findViewById(R.id.list_app_name);
listViewHolder.imageInListView = (ImageView)convertView.findViewById(R.id.app_icon);
convertView.setTag(listViewHolder);
}else{
listViewHolder = (ViewHolder)convertView.getTag();
}
listViewHolder.textInListView.setText(listStorage.get(position).getName());
listViewHolder.imageInListView.setImageDrawable(listStorage.get(position).getIcon());
return convertView;
}
static class ViewHolder{
TextView textInListView;
ImageView imageInListView;
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#eceaea">
<ListView
android:id="@+id/installed_app_list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentTop="true"
android:scrollbars="none" />
</RelativeLayout>
intasted_apps_list.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/app_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:contentDescription="@string/hello_world"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:paddingBottom="8dp"/>
<TextView
android:id="@+id/list_app_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:textSize="16dp"
android:textColor="#000000"
android:layout_toRightOf="@+id/app_icon"
android:layout_alignTop="@+id/app_icon"
android:layout_marginLeft="16dp"
android:layout_marginTop="2dp"
android:text="@string/hello_world"/>
</RelativeLayout>
这就是我所做的。...我的意思是我现在得到所有已安装的应用程序 单击任何列出的应用程序..
时，都需要每个应用程序权限
您还需要与Permissions一起检索PackageName。
PackageManager pm = getPackageManager();
List<ApplicationInfo> packages =pm.getInstalledApplications(PackageManager.GET_META_DATA);
for (ApplicationInfo applicationInfo : packages)
{
Log.d("test", "App: " + applicationInfo.name + " Package: " + applicationInfo.packageName);
try
{
PackageInfo packageInfo = pm.getPackageInfo(applicationInfo.packageName, PackageManager.GET_PERMISSIONS);
//Get Permissions
String[] requestedPermissions = packageInfo.requestedPermissions;
if(requestedPermissions != null)
{
for (int i = 0; i < requestedPermissions.length; i++)
{
Log.d("test", requestedPermissions[i]);
}
}
}
catch (NameNotFoundException e)
{
e.printStackTrace();
}
}
在模态类AppList中添加field权限并填充它。
在您的listView userInstalledApps上添加侦听器
userInstalledApps.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
AppList appList = installedAppAdapter.getItem(position);
String permissions = appList.getPermission();
//Do whatever you want with permissions here.
}
});
请通过此代码在您的AppAdapter类中进行更正
@Override
public AppList getItem(int position) {
return listStorage.get(position);
}
作为您的需要，请检查以下代码用此
替换相应的代码private List<AppList> getInstalledApps()
{
List<AppList> res = new ArrayList<AppList>();
List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
for (int i = 0; i < packs.size(); i++) {
PackageInfo p = packs.get(i);
if ((isSystemPackage(p) == false))
{
String appName = p.applicationInfo.loadLabel(getPackageManager()).toString();
Drawable icon = p.applicationInfo.loadIcon(getPackageManager());
try {
PackageInfo packageInfo = getPackageManager().getPackageInfo(p.applicationInfo.packageName, PackageManager.GET_PERMISSIONS);
//Get Permissions
String[] requestedPermissions = packageInfo.requestedPermissions;
StringBuilder sbPermissionSt = new StringBuilder();
if(requestedPermissions != null)
{
for (int j = 0; j < requestedPermissions.length; j++)
{
Log.d("test", requestedPermissions[j]);
sbPermissionSt.append(requestedPermissions[j]+",");
}
}
res.add(new AppList(appName, icon, sbPermissionSt.toString()));
}
catch (PackageManager.NameNotFoundException nme)
{
nme.printStackTrace();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
return res;
}
您的applist.java
public class AppList
{
private String name;
Drawable icon;
private String permissions;
public AppList(String name, Drawable icon, String permissions)
{
this.name = name;
this.icon = icon;
this.permissions = permissions;
}
public String getName() {
return name;
}
public Drawable getIcon() {
return icon;
}
public String getPermissions() {
return permissions;
}
public void setPermissions(String permissions) {
this.permissions = permissions;
}
}
将适配器设置为listView(附加侦听器(
之后添加此代码userInstalledApps.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
AppList appList = installedAppAdapter.getItem(position);
String permissions = appList.getPermissions();
Toast.makeText(MainActivity.this, permissions, Toast.LENGTH_LONG).show();
}
});