问题
I'm trying to figure out how i can implement this code into my existing source code. Currently i have some source that displays a list-view of all the installed apps and on-click will send intent to the application. I'm needing some support on how to pull the icon and add this into the list view.
Any help, source code editing, links, etc would help me resolve this.
Thank you
ListInstalledActivitiesActivity
public class ListInstalledActivitiesActivity extends ListActivity {
// Buffer used to store package and class information, and also determine the number of installed activities
private ArrayList<String[]> _activitiesBuffer = null;
// Buffers for package and class information
private String[] _packages = null;
private String[] _classes = null;
// Index used to fill buffers
private int _index = 0;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main3);
// Get all installed activities (package and class information for every activity)
getAllInstalledActivities();
// Set content to GUI
setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, _classes));
ListView lv = getListView();
lv.setTextFilterEnabled(true);
// Add listener
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// When clicked, show a toast with the selected activity
Toast.makeText(
getApplicationContext(),
((TextView) view).getText(),
Toast.LENGTH_SHORT).show();
// When clicked, start selected activity, if allowed or possible
try {
Intent intent = new Intent().setClassName(
_packages[position], // package
_classes[position]); // class
startActivity(intent);
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Unable to start selected application.", Toast.LENGTH_SHORT);
}
} // public void onItemClick(AdapterView<?> parent, View view, int position, long id)
});
} // public void onCreate(Bundle savedInstanceState)
/*
* Get all installed activities
*/
private void getAllInstalledActivities() {
// Initialize activities buffer
_activitiesBuffer = new ArrayList<String[]>();
final Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
final List<ResolveInfo> pkgAppsList = getPackageManager().queryIntentActivities( intent, 0);
Iterator<ResolveInfo> iterator1 = pkgAppsList.iterator();
while (iterator1.hasNext()) {
ResolveInfo resolveInfo = iterator1.next();
String[] buf = new String[] {
resolveInfo.activityInfo.packageName,
resolveInfo.activityInfo.name};
_activitiesBuffer.add(buf);
} // while (iterator1.hasNext())
_packages = new String[_activitiesBuffer.size()];
_classes = new String[_activitiesBuffer.size()];
Iterator<String[]> iterator2 = _activitiesBuffer.iterator();
while (iterator2.hasNext()) {
String[] buf = iterator2.next();
// Store package information
_packages[_index] = buf[0];
// Store class information
_classes[_index] = buf[1];
_index++;
} // while (iterator2.hasNext())
} // private void getAllInstalledActivities()
}
main3.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/android:list"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<!-- <ImageView -->
<!--android:id="@+id/ImageView02" -->
<!--android:layout_width="fill_parent" -->
<!--android:layout_height="wrap_content" -->
<!--android:layout_marginBottom="10dp" -->
<!--android:paddingBottom="5dp" -->
</LinearLayout>
回答1:
To fetch the names and icons of the installed applications, you need to use Package Manager class, here is a snippet of code, that will let you fetch application's name and icons
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
public class FetchApplicationsActivity extends Activity {
TextView data;
ImageView image1;
LinearLayout holdlayout;
View l1;
private ArrayList results;
List<ResolveInfo> list;
TextView result;
String str = "";
Drawable icon;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
l1 = findViewById(R.id.Layout1);
results = new ArrayList();
PackageManager pm = this.getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
list = pm.queryIntentActivities(intent,
PackageManager.PERMISSION_GRANTED);
for (ResolveInfo rInfo : list) {
str = rInfo.activityInfo.applicationInfo.loadLabel(pm).toString()
+ "\n";
results.add(rInfo.activityInfo.applicationInfo.loadLabel(pm)
.toString());
Log.w("Installed Applications", rInfo.activityInfo.applicationInfo
.loadLabel(pm).toString());
icon = rInfo.activityInfo.applicationInfo.loadIcon(pm);
holdlayout = new LinearLayout(getApplicationContext());
holdlayout.setOrientation(LinearLayout.HORIZONTAL);
data = new TextView(getApplicationContext());
data.setText(str);
image1 = new ImageView(getApplicationContext());
image1.setBackgroundDrawable(icon);
((ViewGroup) holdlayout).addView(image1);
((ViewGroup) holdlayout).addView(data);
((ViewGroup) l1).addView(holdlayout);
}
}
}
Edit- You can define your main.xml as,
?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:id="@+id/Layout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>
</LinearLayout>
Here I have created dynamic textviews, Imageviews and layouts to show the names and icons. You can create your own customized list to show this.
Edit2- Here is a good link on how to create customized list and also look here. I think these will solve the issue.
回答2:
I follow this tutorial and its very helpful to me:
class PInfo {
private String appname = "";
private String pname = "";
private String versionName = "";
private int versionCode = 0;
private Drawable icon;
private void prettyPrint() {
Log.v(appname + "\t" + pname + "\t" + versionName + "\t" + versionCode);
}
}
private ArrayList<PInfo> getPackages() {
ArrayList<PInfo> apps = getInstalledApps(false); /* false = no system packages */
final int max = apps.size();
for (int i=0; i<max; i++) {
apps.get(i).prettyPrint();
}
return apps;
}
private ArrayList<PInfo> getInstalledApps(boolean getSysPackages) {
ArrayList<PInfo> res = new ArrayList<PInfo>();
List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
for(int i=0;i<packs.size();i++) {
PackageInfo p = packs.get(i);
if ((!getSysPackages) && (p.versionName == null)) {
continue ;
}
PInfo newInfo = new PInfo();
newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString();
newInfo.pname = p.packageName;
newInfo.versionName = p.versionName;
newInfo.versionCode = p.versionCode;
newInfo.icon = p.applicationInfo.loadIcon(getPackageManager());
res.add(newInfo);
}
return res;
}
来源：https://stackoverflow.com/questions/14065028/how-to-pull-list-of-installed-app-name-package-name-and-icon-drawable