[英]how to get running applications icon on android programmatically
Below here is my code but i am getting default android launcher icon for all running applications: 下面是我的代码,但我得到所有正在运行的应用程序的默认android启动器图标:
PackageManager pm = getPackageManager();
ActivityManager am1 = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> processes = am1.getRunningTasks(Integer.MAX_VALUE);
if (processes != null) {
for (int k = 0; k < processes.size(); k++) {
// String pkgName = app.getPackageName();
String packageName = processes.get(k).topActivity
.getPackageName();
Drawable ico = null;
try
{
String pName = (String) pm.getApplicationLabel(pm
.getApplicationInfo(packageName,
PackageManager.GET_META_DATA));
ico = pm.getApplicationIcon(pName);
}
catch (NameNotFoundException e)
{
Log.e("ERROR", "Unable to find icon for package '"
+ packageName + "': " + e.getMessage());
}
icons.put(processes.get(k).topActivity.getPackageName(),ico);
}
just replace this line 只需更换此行
ico = pm.getApplicationIcon(pName);
to this 对此
ico = getApplicationInfo().loadIcon(getPackageManager());
EDITED full code : 已编辑完整代码:
public void getAllICONS() {
PackageManager pm = getPackageManager();
ActivityManager am1 = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> processes = am1
.getRunningTasks(Integer.MAX_VALUE);
if (processes != null) {
for (int k = 0; k < 5; k++) {
// String pkgName = app.getPackageName();
String packageName = processes.get(k).topActivity
.getPackageName();
Log.e("packageName-->", "" + packageName);
Drawable ico = null;
try {
String pName = (String) pm.getApplicationLabel(pm
.getApplicationInfo(packageName,
PackageManager.GET_META_DATA));
name.add("" + pName);
ApplicationInfo a = pm.getApplicationInfo(packageName,
PackageManager.GET_META_DATA);
ico = getPackageManager().getApplicationIcon(
processes.get(k).topActivity.getPackageName());
getPackageManager();
Log.e("ico-->", "" + ico);
} catch (NameNotFoundException e) {
Log.e("ERROR", "Unable to find icon for package '"
+ packageName + "': " + e.getMessage());
}
// icons.put(processes.get(k).topActivity.getPackageName(),ico);
icons.add(ico);
}
}
}
above code is show you icons like: 上面的代码显示你的图标:
To retrieve the app icon, you can use the getApplicationIcon() method of the PackageManger . 要检索应用程序图标,可以使用PackageManger的getApplicationIcon()方法。
In your case, since you are retriving the icon of the running apps, you can do something like: 在您的情况下,由于您正在重新查找正在运行的应用程序的图标,因此您可以执行以下操作:
final ActivityManager am = (ActivityManager) getSystemService(Activity.ACTIVITY_SERVICE);
final PackageManager pm = getPackageManager();
List<ActivityManager.RunningTaskInfo> runningTasks;
try {
runningTasks = am.getRunningTasks(100);
}
catch ( SecurityException e ) {
runningTasks = new ArrayList<ActivityManager.RunningTaskInfo>();
//e.printStackTrace();
}
Drawable icon;
for ( ActivityManager.RunningTaskInfo task : runningTasks ) {
final String packageName = task.topActivity.getPackageName();
try {
icon = pm.getApplicationIcon(packageName);
}
catch ( PackageManager.NameNotFoundException e ) {
//e.printStackTrace();
}
}
Otherwise, even better, you may use the other implementation of getApplicationIcon() , thus: 否则,更好的是,您可以使用getApplicationIcon()的其他实现,因此:
ApplicationInfo ai;
try {
ai = pm.getApplicationInfo(packageName, PackageManager.GET_META_DATA);
} catch ( PackageManager.NameNotFoundException e ) {
ai = null;
//e.printStackTrace();
}
if ( ai != null ) {
icon = pm.getApplicationIcon(ai);
}
PS: In any case, please note that getRunningTasks() will never return null , but an empty list at most. PS:无论如何,请注意getRunningTasks()永远不会返回null ,但最多只能返回一个空列表 。
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