下面列出了android.app.ActivityManager.RunningAppProcessInfo#IMPORTANCE_FOREGROUND 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private boolean isApplicationInForeground() {
ActivityManager activityManager = (ActivityManager) this.getSystemService(ACTIVITY_SERVICE);
List<RunningAppProcessInfo> processInfos = activityManager.getRunningAppProcesses();
if (processInfos != null) {
for (RunningAppProcessInfo processInfo : processInfos) {
if (processInfo.processName.equals(getApplication().getPackageName())) {
if (processInfo.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
for (String d : processInfo.pkgList) {
return true;
}
}
}
}
}
return false;
}
private boolean isAppOnForeground() {
ActivityManager aManager=((ActivityManager)getSystemService(Context.ACTIVITY_SERVICE));
List<RunningAppProcessInfo> appProcesses = aManager.getRunningAppProcesses();
if (appProcesses == null) return false;
for (RunningAppProcessInfo appProcess : appProcesses) {
if (appProcess.processName.equals(getPackageName())){
Log.e("StopListennerActivity", "appProcess.importance="+appProcess.importance);
// inRunningTasks(aManager);
if(appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
return true;
}else{
return false;
}
}
}
return false;
}
/**
* 程序是否在前台运行
*
* @return
*/
public static boolean isAppOnForeground(Context context) {
try {
ActivityManager activityManager = (ActivityManager) context
.getApplicationContext().getSystemService(
Context.ACTIVITY_SERVICE);
String packageName = context.getPackageName();
List<RunningAppProcessInfo> appProcesses = activityManager
.getRunningAppProcesses();
if (appProcesses == null) {
return false;
}
for (RunningAppProcessInfo appProcess : appProcesses) {
// The name of the process that this object is associated with.
if (appProcess.processName.equals(packageName)
&& appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
return true;
}
}
} catch (Exception e) {
e.printStackTrace();
LogS.e(TAG, "isAppOnForeground exception!", e);
}
return false;
}
public boolean isAppOnForeground() {
// Returns a list of application processes that are running on the
// device
String packageName = context.getPackageName();
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
if (appProcesses == null)
return false;
for (RunningAppProcessInfo appProcess : appProcesses) {
// importance:
// The relative importance level that the system places
// on this process.
// May be one of IMPORTANCE_FOREGROUND, IMPORTANCE_VISIBLE,
// IMPORTANCE_SERVICE, IMPORTANCE_BACKGROUND, or IMPORTANCE_EMPTY.
// These constants are numbered so that "more important" values are
// always smaller than "less important" values.
// processName:
// The name of the process that this object is associated with.
if (appProcess.processName.equals(packageName) && appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
return true;
}
}
return false;
}
public static boolean isBackground(Context context) {
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
for (RunningAppProcessInfo appProcess : appProcesses) {
if (appProcess.processName.equals(context.getPackageName())) {
/*
* BACKGROUND=400 EMPTY=500 FOREGROUND=100 GONE=1000
* PERCEPTIBLE=130 SERVICE=300 ISIBLE=200
*/
Log.i(context.getPackageName(), "此appimportace =" + appProcess.importance
+ ",context.getClass().getName()=" + context.getClass().getName());
if (appProcess.importance != RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
Log.i(context.getPackageName(), "处于后台" + appProcess.processName);
return true;
} else {
Log.i(context.getPackageName(), "处于前台" + appProcess.processName);
return false;
}
}
}
return false;
}
/**
* 程序是否在前台
* @deprecated 注：如果对于APP启动后有常驻Service，也判断为了前台(也不准)
* @param context
*/
@Deprecated
public static boolean isAppOnForeground(final Context context) {
if (context == null) {
return false;
}
Context appContext = context.getApplicationContext();
ActivityManager activityManager = (ActivityManager) appContext.getSystemService(Context.ACTIVITY_SERVICE);
if (activityManager == null) {
return false;
}
String packageName = appContext.getPackageName();
List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
if (appProcesses != null) {
for (RunningAppProcessInfo appProcess : appProcesses) {
// The name of the process that this object is associated with.
if (appProcess.processName.equals(packageName) && appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
return true;
}
}
}
return false;
}
/** APP is not runing true:false */
public static boolean isBackground(Context context) {
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
for (RunningAppProcessInfo appProcess : appProcesses) {
//判断所有的app进程,报名是否等于该app
if (appProcess.processName.equals(context.getPackageName())) {
if (appProcess.importance != RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
return true; //"处于后台"
} else {
return false;//"处于前台"
}
}
}
return false;
}
public static boolean isBackground(Context context) {
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
for (RunningAppProcessInfo appProcess : appProcesses) {
if (appProcess.processName.equals(context.getPackageName())) {
/*
* BACKGROUND=400 EMPTY=500 FOREGROUND=100 GONE=1000
* PERCEPTIBLE=130 SERVICE=300 ISIBLE=200
*/
Log.i(context.getPackageName(), "此appimportace =" + appProcess.importance
+ ",context.getClass().getName()=" + context.getClass().getName());
if (appProcess.importance != RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
Log.i(context.getPackageName(), "处于后台" + appProcess.processName);
return true;
} else {
Log.i(context.getPackageName(), "处于前台" + appProcess.processName);
return false;
}
}
}
return false;
}
/**
* Checks if this application is foreground
*
* @param context Context to be examined
* @return true if this application is running on the top; false otherwise
*/
public static boolean isContextForeground(Context context) {
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
int pid = getPid();
for (RunningAppProcessInfo appProcess : appProcesses) {
if (appProcess.pid == pid) {
return appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND;
}
}
return false;
}
public static boolean isMyAppInForeground(Context context) {
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
for (RunningAppProcessInfo appProcess : appProcesses) {
if (appProcess.processName.equals(context.getPackageName())) {
return appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND;
}
}
return true;
}
private boolean isApplicationInForeground() {
ActivityManager activityManager = (ActivityManager) mFirebaseMessagingService.getSystemService(ACTIVITY_SERVICE);
List<RunningAppProcessInfo> processInfos = activityManager.getRunningAppProcesses();
if (processInfos != null) {
for (RunningAppProcessInfo processInfo : processInfos) {
if (processInfo.processName.equals(mFirebaseMessagingService.getPackageName())
&& processInfo.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND
&& processInfo.pkgList.length > 0) {
return true;
}
}
}
return false;
}
private boolean isApplicationInForeground(Context context) {
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> processInfos = activityManager.getRunningAppProcesses();
if (processInfos != null) {
for (RunningAppProcessInfo processInfo : processInfos) {
if (processInfo.processName.equals(context.getPackageName())
&& processInfo.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND
&& processInfo.pkgList.length > 0) {
return true;
}
}
}
return false;
}
private void bind(final int position) {
final ProcessInfo pi = lpinfo.get(position);
cbx.setTag(pi);
more.setTag(pi);
name.setText(pi.label);
attr.setText(pi.packageName);
items.setText(Util.nf.format(pi.size) + " B");
int importance = pi.status;
if (importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
type.setText("Foreground");
} else if (importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND_SERVICE) {
type.setText("Foreground Service");
} else if (importance == RunningAppProcessInfo.IMPORTANCE_BACKGROUND) {
type.setText("Background");
} else if (importance == RunningAppProcessInfo.IMPORTANCE_VISIBLE) {
type.setText("Visible");
} else if (importance == RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE) {
type.setText("Perceptible");
} else if (importance == RunningAppProcessInfo.IMPORTANCE_SERVICE) {
type.setText("Service");
} else if (importance == 150) {//}RunningAppProcessInfo.IMPORTANCE_TOP_SLEEPING) {
type.setText("Sleep");
} else if (importance == RunningAppProcessInfo.IMPORTANCE_GONE) {
type.setText("Gone");
} else if (importance == RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE) {
type.setText("Can't save state");
} else if (importance == RunningAppProcessInfo.IMPORTANCE_EMPTY) {
type.setText("Empty");
}
try {
image.setImageDrawable(pk.getApplicationIcon(pi.packageName));
} catch (NameNotFoundException e) {
image.setImageResource(R.drawable.ic_doc_apk);
}
final boolean checked = selectedInList1.contains(pi.packageName);
if (checked) {
ll.setBackgroundColor(Constants.IN_DATA_SOURCE_2);
cbx.setSelected(true);
cbx.setImageResource(R.drawable.ic_accept);
} else if (selectedInList1.size() > 0) {
ll.setBackgroundColor(Constants.BASE_BACKGROUND);
cbx.setSelected(false);
cbx.setImageResource(R.drawable.ready);
} else {
ll.setBackgroundResource(R.drawable.ripple);
cbx.setSelected(false);
cbx.setImageResource(R.drawable.dot);
}
}
private void includeAppFromProcess(MatrixCursor result, String docId, AndroidAppProcess processInfo, String query ) {
String process = processInfo.name;
final String packageName = processInfo.getPackageName();
process = process.substring(process.lastIndexOf(".") + 1, process.length());
String summary = "";
String displayName = "";
ApplicationInfo appInfo = null;
try {
appInfo = packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES).applicationInfo;
displayName = process ;
} catch (Exception e) { }
if (TextUtils.isEmpty(displayName)) {
displayName = process;
}
if (null != query && !displayName.toLowerCase().contains(query)) {
return;
}
final String path = null != appInfo ? appInfo.sourceDir : "";
final String mimeType = Document.MIME_TYPE_APK;
int flags = Document.FLAG_SUPPORTS_DELETE | Document.FLAG_SUPPORTS_THUMBNAIL;
if(isTelevision()) {
flags |= Document.FLAG_DIR_PREFERS_GRID;
}
int importance = processInfo.foreground ? RunningAppProcessInfo.IMPORTANCE_FOREGROUND : RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
summary = processTypeCache.get(importance);
final long size = getProcessSize(processInfo.pid);
final RowBuilder row = result.newRow();
row.add(Document.COLUMN_DOCUMENT_ID, getDocIdForApp(docId, packageName));
row.add(Document.COLUMN_DISPLAY_NAME, displayName);
row.add(Document.COLUMN_SUMMARY, summary);
row.add(Document.COLUMN_SIZE, size);
row.add(Document.COLUMN_MIME_TYPE, mimeType);
//row.add(Document.COLUMN_LAST_MODIFIED, lastModified);
row.add(Document.COLUMN_PATH, path);
row.add(Document.COLUMN_FLAGS, flags);
}
private void includeAppFromService(MatrixCursor result, String docId, RunningServiceInfo processInfo, String query ) {
String process = processInfo.process;
final String packageName = processInfo.process;
process = process.substring(process.lastIndexOf(".") + 1, process.length());
String summary = "";
String displayName = "";
ApplicationInfo appInfo = null;
try {
appInfo = packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES).applicationInfo;
displayName = process ;
} catch (Exception e) { }
if (TextUtils.isEmpty(displayName)) {
displayName = process;
}
if (null != query && !displayName.toLowerCase().contains(query)) {
return;
}
final String path = null != appInfo ? appInfo.sourceDir : "";
final String mimeType = Document.MIME_TYPE_APK;
int flags = Document.FLAG_SUPPORTS_DELETE | Document.FLAG_SUPPORTS_THUMBNAIL;
if(isTelevision()) {
flags |= Document.FLAG_DIR_PREFERS_GRID;
}
int importance = processInfo.foreground ? RunningAppProcessInfo.IMPORTANCE_FOREGROUND : RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
summary = processTypeCache.get(importance);
final long size = getProcessSize(processInfo.pid);
final RowBuilder row = result.newRow();
row.add(Document.COLUMN_DOCUMENT_ID, getDocIdForApp(docId, packageName));
row.add(Document.COLUMN_DISPLAY_NAME, displayName);
row.add(Document.COLUMN_SUMMARY, summary);
row.add(Document.COLUMN_SIZE, size);
row.add(Document.COLUMN_MIME_TYPE, mimeType);
//row.add(Document.COLUMN_LAST_MODIFIED, processInfo.lastActivityTime);
row.add(Document.COLUMN_PATH, path);
row.add(Document.COLUMN_FLAGS, flags);
}
private void includeAppFromProcess(MatrixCursor result, String docId, AndroidAppProcess processInfo, String query ) {
String process = processInfo.name;
final String packageName = processInfo.getPackageName();
process = process.substring(process.lastIndexOf(".") + 1, process.length());
String summary = "";
String displayName = "";
ApplicationInfo appInfo = null;
try {
appInfo = packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES).applicationInfo;
displayName = process ;
} catch (Exception e) { }
if (TextUtils.isEmpty(displayName)) {
displayName = process;
}
if (null != query && !displayName.toLowerCase().contains(query)) {
return;
}
final String path = null != appInfo ? appInfo.sourceDir : "";
final String mimeType = Document.MIME_TYPE_APK;
int flags = Document.FLAG_SUPPORTS_DELETE | Document.FLAG_SUPPORTS_THUMBNAIL;
if(isTelevision()) {
flags |= Document.FLAG_DIR_PREFERS_GRID;
}
int importance = processInfo.foreground ? RunningAppProcessInfo.IMPORTANCE_FOREGROUND : RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
summary = processTypeCache.get(importance);
final long size = getProcessSize(processInfo.pid);
final RowBuilder row = result.newRow();
row.add(Document.COLUMN_DOCUMENT_ID, getDocIdForApp(docId, packageName));
row.add(Document.COLUMN_DISPLAY_NAME, displayName);
row.add(Document.COLUMN_SUMMARY, summary);
row.add(Document.COLUMN_SIZE, size);
row.add(Document.COLUMN_MIME_TYPE, mimeType);
//row.add(Document.COLUMN_LAST_MODIFIED, lastModified);
row.add(Document.COLUMN_PATH, path);
row.add(Document.COLUMN_FLAGS, flags);
}
private void includeAppFromService(MatrixCursor result, String docId, RunningServiceInfo processInfo, String query ) {
String process = processInfo.process;
final String packageName = processInfo.process;
process = process.substring(process.lastIndexOf(".") + 1, process.length());
String summary = "";
String displayName = "";
ApplicationInfo appInfo = null;
try {
appInfo = packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES).applicationInfo;
displayName = process ;
} catch (Exception e) { }
if (TextUtils.isEmpty(displayName)) {
displayName = process;
}
if (null != query && !displayName.toLowerCase().contains(query)) {
return;
}
final String path = null != appInfo ? appInfo.sourceDir : "";
final String mimeType = Document.MIME_TYPE_APK;
int flags = Document.FLAG_SUPPORTS_DELETE | Document.FLAG_SUPPORTS_THUMBNAIL;
if(isTelevision()) {
flags |= Document.FLAG_DIR_PREFERS_GRID;
}
int importance = processInfo.foreground ? RunningAppProcessInfo.IMPORTANCE_FOREGROUND : RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
summary = processTypeCache.get(importance);
final long size = getProcessSize(processInfo.pid);
final RowBuilder row = result.newRow();
row.add(Document.COLUMN_DOCUMENT_ID, getDocIdForApp(docId, packageName));
row.add(Document.COLUMN_DISPLAY_NAME, displayName);
row.add(Document.COLUMN_SUMMARY, summary);
row.add(Document.COLUMN_SIZE, size);
row.add(Document.COLUMN_MIME_TYPE, mimeType);
//row.add(Document.COLUMN_LAST_MODIFIED, processInfo.lastActivityTime);
row.add(Document.COLUMN_PATH, path);
row.add(Document.COLUMN_FLAGS, flags);
}
private void includeAppFromProcess(MatrixCursor result, String docId, AndroidAppProcess processInfo, String query ) {
String process = processInfo.name;
final String packageName = processInfo.getPackageName();
process = process.substring(process.lastIndexOf(".") + 1, process.length());
String summary = "";
String displayName = "";
ApplicationInfo appInfo = null;
try {
appInfo = packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES).applicationInfo;
displayName = process ;
} catch (Exception e) { }
if (TextUtils.isEmpty(displayName)) {
displayName = process;
}
if (null != query && !displayName.toLowerCase().contains(query)) {
return;
}
final String path = null != appInfo ? appInfo.sourceDir : "";
final String mimeType = Document.MIME_TYPE_APK;
int flags = Document.FLAG_SUPPORTS_DELETE | Document.FLAG_SUPPORTS_THUMBNAIL;
if(isTelevision()) {
flags |= Document.FLAG_DIR_PREFERS_GRID;
}
int importance = processInfo.foreground ? RunningAppProcessInfo.IMPORTANCE_FOREGROUND : RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
summary = processTypeCache.get(importance);
final long size = getProcessSize(processInfo.pid);
final RowBuilder row = result.newRow();
row.add(Document.COLUMN_DOCUMENT_ID, getDocIdForApp(docId, packageName));
row.add(Document.COLUMN_DISPLAY_NAME, displayName);
row.add(Document.COLUMN_SUMMARY, summary);
row.add(Document.COLUMN_SIZE, size);
row.add(Document.COLUMN_MIME_TYPE, mimeType);
//row.add(Document.COLUMN_LAST_MODIFIED, lastModified);
row.add(Document.COLUMN_PATH, path);
row.add(Document.COLUMN_FLAGS, flags);
}
private void includeAppFromService(MatrixCursor result, String docId, RunningServiceInfo processInfo, String query ) {
String process = processInfo.process;
final String packageName = processInfo.process;
process = process.substring(process.lastIndexOf(".") + 1, process.length());
String summary = "";
String displayName = "";
ApplicationInfo appInfo = null;
try {
appInfo = packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES).applicationInfo;
displayName = process ;
} catch (Exception e) { }
if (TextUtils.isEmpty(displayName)) {
displayName = process;
}
if (null != query && !displayName.toLowerCase().contains(query)) {
return;
}
final String path = null != appInfo ? appInfo.sourceDir : "";
final String mimeType = Document.MIME_TYPE_APK;
int flags = Document.FLAG_SUPPORTS_DELETE | Document.FLAG_SUPPORTS_THUMBNAIL;
if(isTelevision()) {
flags |= Document.FLAG_DIR_PREFERS_GRID;
}
int importance = processInfo.foreground ? RunningAppProcessInfo.IMPORTANCE_FOREGROUND : RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
summary = processTypeCache.get(importance);
final long size = getProcessSize(processInfo.pid);
final RowBuilder row = result.newRow();
row.add(Document.COLUMN_DOCUMENT_ID, getDocIdForApp(docId, packageName));
row.add(Document.COLUMN_DISPLAY_NAME, displayName);
row.add(Document.COLUMN_SUMMARY, summary);
row.add(Document.COLUMN_SIZE, size);
row.add(Document.COLUMN_MIME_TYPE, mimeType);
//row.add(Document.COLUMN_LAST_MODIFIED, processInfo.lastActivityTime);
row.add(Document.COLUMN_PATH, path);
row.add(Document.COLUMN_FLAGS, flags);
}
private void runProcessGC() {
if (mHostContext == null) {
return;
}
ActivityManager am = (ActivityManager) mHostContext.getSystemService(Context.ACTIVITY_SERVICE);
if (am == null) {
return;
}
List<RunningAppProcessInfo> infos = am.getRunningAppProcesses();
List<RunningAppProcessInfo> myInfos = new ArrayList<RunningAppProcessInfo>();
if (infos == null || infos.size() < 0) {
return;
}
List<String> pns = mStaticProcessList.getOtherProcessNames();
pns.add(mHostContext.getPackageName());
for (RunningAppProcessInfo info : infos) {
if (info.uid == android.os.Process.myUid()
&& info.pid != android.os.Process.myPid()
&& !pns.contains(info.processName)
&& mRunningProcessList.isPlugin(info.pid)
&& !mRunningProcessList.isPersistentApplication(info.pid)
/*&& !mRunningProcessList.isPersistentApplication(info.pid)*/) {
myInfos.add(info);
}
}
Collections.sort(myInfos, sProcessComparator);
for (RunningAppProcessInfo myInfo : myInfos) {
if (myInfo.importance == RunningAppProcessInfo.IMPORTANCE_GONE) {
doGc(myInfo);
} else if (myInfo.importance == RunningAppProcessInfo.IMPORTANCE_EMPTY) {
doGc(myInfo);
} else if (myInfo.importance == RunningAppProcessInfo.IMPORTANCE_BACKGROUND) {
doGc(myInfo);
} else if (myInfo.importance == RunningAppProcessInfo.IMPORTANCE_SERVICE) {
doGc(myInfo);
} /*else if (myInfo.importance == RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE) {
//杀死进程，不能保存状态。但是关我什么事？
}*/ else if (myInfo.importance == RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE) {
//杀死进程
} else if (myInfo.importance == RunningAppProcessInfo.IMPORTANCE_VISIBLE) {
//看得见
} else if (myInfo.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
//前台进程。
}
}
}