是否有Android标准徽章或方法来显示带有Google示例的计数的操作栏通知图标?
如果没有,那么最好的方法是什么呢? 我是android的新手,请帮忙。
我不确定这是否是最好的解决方案,但这是我需要的。
如果您知道需要更改哪些内容以获得更好的性能或质量,请告诉我。就我而言,我有一个按钮。
我的菜单上的自定义项 - main.xml
<item
android:id="@+id/badge"
android:actionLayout="@layout/feed_update_count"
android:icon="@drawable/shape_notification"
android:showAsAction="always">
</item>
自定义形状drawable(背景方块) - shape_notification.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<stroke android:color="#22000000" android:width="2dp"/>
<corners android:radius="5dp" />
<solid android:color="#CC0001"/>
</shape>
我的视图布局 - feed_update_count.xml
<?xml version="1.0" encoding="utf-8"?>
<Button xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/notif_count"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="32dp"
android:minHeight="32dp"
android:background="@drawable/shape_notification"
android:text="0"
android:textSize="16sp"
android:textColor="@android:color/white"
android:gravity="center"
android:padding="2dp"
android:singleLine="true">
</Button>
MainActivity - 设置和更新我的视图
static Button notifCount;
static int mNotifCount = 0;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getSupportMenuInflater();
inflater.inflate(R.menu.main, menu);
View count = menu.findItem(R.id.badge).getActionView();
notifCount = (Button) count.findViewById(R.id.notif_count);
notifCount.setText(String.valueOf(mNotifCount));
return super.onCreateOptionsMenu(menu);
}
private void setNotifCount(int count){
mNotifCount = count;
invalidateOptionsMenu();
}
编辑从支持库(或androidx)的版本26开始,您不再需要实现自定义OnLongClickListener
来显示工具提示。简单地称之为:
TooltipCompat.setTooltipText(menu_hotlist, getString(R.string.hint_show_hot_message));
我会分享我的代码,以防有人想要这样的东西:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
...
<item android:id="@+id/menu_hotlist"
android:actionLayout="@layout/action_bar_notifitcation_icon"
android:showAsAction="always"
android:icon="@drawable/ic_bell"
android:title="@string/hotlist" />
...
</menu>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="vertical"
android:gravity="center"
android:layout_gravity="center"
android:clickable="true"
style="@android:style/Widget.ActionButton">
<ImageView
android:id="@+id/hotlist_bell"
android:src="@drawable/ic_bell"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_margin="0dp"
android:contentDescription="bell"
/>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/hotlist_hot"
android:layout_width="wrap_content"
android:minWidth="17sp"
android:textSize="12sp"
android:textColor="#ffffffff"
android:layout_height="wrap_content"
android:gravity="center"
android:text="@null"
android:layout_alignTop="@id/hotlist_bell"
android:layout_alignRight="@id/hotlist_bell"
android:layout_marginRight="0dp"
android:layout_marginTop="3dp"
android:paddingBottom="1dp"
android:paddingRight="4dp"
android:paddingLeft="4dp"
android:background="@drawable/rounded_square"/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="2dp" />
<solid android:color="#ffff0000" />
<stroke android:color="#ff222222" android:width="2dp"/>
</shape>
private int hot_number = 0;
private TextView ui_hot = null;
@Override public boolean onCreateOptionsMenu(final Menu menu) {
MenuInflater menuInflater = getSupportMenuInflater();
menuInflater.inflate(R.menu.menu_actionbar, menu);
final View menu_hotlist = menu.findItem(R.id.menu_hotlist).getActionView();
ui_hot = (TextView) menu_hotlist.findViewById(R.id.hotlist_hot);
updateHotCount(hot_number);
new MyMenuItemStuffListener(menu_hotlist, "Show hot message") {
@Override
public void onClick(View v) {
onHotlistSelected();
}
};
return super.onCreateOptionsMenu(menu);
}
// call the updating code on the main thread,
// so we can call this asynchronously
public void updateHotCount(final int new_hot_number) {
hot_number = new_hot_number;
if (ui_hot == null) return;
runOnUiThread(new Runnable() {
@Override
public void run() {
if (new_hot_number == 0)
ui_hot.setVisibility(View.INVISIBLE);
else {
ui_hot.setVisibility(View.VISIBLE);
ui_hot.setText(Integer.toString(new_hot_number));
}
}
});
}
static abstract class MyMenuItemStuffListener implements View.OnClickListener, View.OnLongClickListener {
private String hint;
private View view;
MyMenuItemStuffListener(View view, String hint) {
this.view = view;
this.hint = hint;
view.setOnClickListener(this);
view.setOnLongClickListener(this);
}
@Override abstract public void onClick(View v);
@Override public boolean onLongClick(View v) {
final int[] screenPos = new int[2];
final Rect displayFrame = new Rect();
view.getLocationOnScreen(screenPos);
view.getWindowVisibleDisplayFrame(displayFrame);
final Context context = view.getContext();
final int width = view.getWidth();
final int height = view.getHeight();
final int midy = screenPos[1] + height / 2;
final int screenWidth = context.getResources().getDisplayMetrics().widthPixels;
Toast cheatSheet = Toast.makeText(context, hint, Toast.LENGTH_SHORT);
if (midy < displayFrame.height()) {
cheatSheet.setGravity(Gravity.TOP | Gravity.RIGHT,
screenWidth - screenPos[0] - width / 2, height);
} else {
cheatSheet.setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, height);
}
cheatSheet.show();
return true;
}
}
只是补充一下。如果有人想要实现一个填充的圆形气泡,那就是代码(将其命名为bage_circle.xml
):
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="ring"
android:useLevel="false"
android:thickness="9dp"
android:innerRadius="0dp"
>
<solid
android:color="#F00"
/>
<stroke
android:width="1dip"
android:color="#FFF" />
<padding
android:top="2dp"
android:bottom="2dp"/>
</shape>
您可能需要根据需要调整厚度。
编辑:这是按钮的布局(将其命名为badge_layout.xml
):
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<com.joanzapata.iconify.widget.IconButton
android:layout_width="44dp"
android:layout_height="44dp"
android:textSize="24sp"
android:textColor="@color/white"
android:background="@drawable/action_bar_icon_bg"
android:id="@+id/badge_icon_button"/>
<TextView
android:id="@+id/badge_textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@id/badge_icon_button"
android:layout_alignRight="@id/badge_icon_button"
android:layout_alignEnd="@id/badge_icon_button"
android:text="10"
android:paddingEnd="8dp"
android:paddingRight="8dp"
android:paddingLeft="8dp"
android:gravity="center"
android:textColor="#FFF"
android:textSize="11sp"
android:background="@drawable/badge_circle"/>
</RelativeLayout>
在菜单中创建项目:
<item
android:id="@+id/menu_messages"
android:showAsAction="always"
android:actionLayout="@layout/badge_layout"/>
在onCreateOptionsMenu
中获取对菜单项的引用:
itemMessages = menu.findItem(R.id.menu_messages);
badgeLayout = (RelativeLayout) itemMessages.getActionView();
itemMessagesBadgeTextView = (TextView) badgeLayout.findViewById(R.id.badge_textView);
itemMessagesBadgeTextView.setVisibility(View.GONE); // initially hidden
iconButtonMessages = (IconButton) badgeLayout.findViewById(R.id.badge_icon_button);
iconButtonMessages.setText("{fa-envelope}");
iconButtonMessages.setTextColor(getResources().getColor(R.color.action_bar_icon_color_disabled));
iconButtonMessages.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (HJSession.getSession().getSessionId() != null) {
Intent intent = new Intent(getThis(), HJActivityMessagesContexts.class);
startActivityForResult(intent, HJRequestCodes.kHJRequestCodeActivityMessages.ordinal());
} else {
showLoginActivity();
}
}
});
收到消息通知后,设置计数:
itemMessagesBadgeTextView.setText("" + count);
itemMessagesBadgeTextView.setVisibility(View.VISIBLE);
iconButtonMessages.setTextColor(getResources().getColor(R.color.white));
此代码使用Iconify-fontawesome。
compile 'com.joanzapata.iconify:android-iconify-fontawesome:2.1.+'
我不喜欢基于ActionView
的解决方案,我的想法是:
TextView
创建一个布局,TextView
将由应用程序填充MenuItem
:
2.1。膨胀布局
2.2。调用measure()
和layout()
(否则view
将为0px x 0px,对于大多数用例来说它太小了)
2.3。设置TextView
的文本
2.4。制作视图的“屏幕截图”
2.6。根据2.4上创建的位图设置MenuItem
的图标所以,结果应该是这样的
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/counterPanel" android:layout_width="32dp" android:layout_height="32dp" android:background="@drawable/ic_menu_gallery"> <RelativeLayout android:id="@+id/counterValuePanel" android:layout_width="wrap_content" android:layout_height="wrap_content" > <ImageView android:id="@+id/counterBackground" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/unread_background" /> <TextView android:id="@+id/count" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="1" android:textSize="8sp" android:layout_centerInParent="true" android:textColor="#FFFFFF" /> </RelativeLayout> </FrameLayout>
@drawable/unread_background
是绿色TextView
的背景,@drawable/ic_menu_gallery
在这里并不是真的需要,它只是在IDE中预览布局的结果。
onCreateOptionsMenu
/ onPrepareOptionsMenu
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
MenuItem menuItem = menu.findItem(R.id.testAction);
menuItem.setIcon(buildCounterDrawable(count, R.drawable.ic_menu_gallery));
return true;
}
private Drawable buildCounterDrawable(int count, int backgroundImageId) {
LayoutInflater inflater = LayoutInflater.from(this);
View view = inflater.inflate(R.layout.counter_menuitem_layout, null);
view.setBackgroundResource(backgroundImageId);
if (count == 0) {
View counterTextPanel = view.findViewById(R.id.counterValuePanel);
counterTextPanel.setVisibility(View.GONE);
} else {
TextView textView = (TextView) view.findViewById(R.id.count);
textView.setText("" + count);
}
view.measure(
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
view.setDrawingCacheEnabled(true);
view.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());
view.setDrawingCacheEnabled(false);
return new BitmapDrawable(getResources(), bitmap);
}
完整的代码在这里:https://github.com/cvoronin/ActionBarMenuItemCounter
好的,对于@AndrewS解决方案来使用v7 appCompat库:
<menu
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:someNamespace="http://schemas.android.com/apk/res-auto" >
<item
android:id="@+id/saved_badge"
someNamespace:showAsAction="always"
android:icon="@drawable/shape_notification" />
</menu>
.
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
menu.clear();
inflater.inflate(R.menu.main, menu);
MenuItem item = menu.findItem(R.id.saved_badge);
MenuItemCompat.setActionView(item, R.layout.feed_update_count);
View view = MenuItemCompat.getActionView(item);
notifCount = (Button)view.findViewById(R.id.notif_count);
notifCount.setText(String.valueOf(mNotifCount));
}
private void setNotifCount(int count){
mNotifCount = count;
supportInvalidateOptionsMenu();
}
其余的代码是一样的。
尝试查看这些问题的答案,特别是第二个有示例代码的问题:
How to implement dynamic values on menu item in Android
How to get text on an ActionBar Icon?
从我看到,你需要创建自己的自定义ActionView
实现。另一种选择可能是定制的Drawable
。请注意,Action Bar似乎没有本机实现通知计数。
编辑:您正在寻找的答案,代码:Custom Notification View与sample implementation
使用工具栏时:
....
private void InitToolbar() {
toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar);
toolbartitle = (TextView) findViewById(R.id.titletool);
toolbar.inflateMenu(R.menu.show_post);
toolbar.setOnMenuItemClickListener(this);
Menu menu = toolbar.getMenu();
MenuItem menu_comments = menu.findItem(R.id.action_comments);
MenuItemCompat
.setActionView(menu_comments, R.layout.menu_commentscount);
View v = MenuItemCompat.getActionView(menu_comments);
v.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// Your Action
}
});
comment_count = (TextView) v.findViewById(R.id.count);
}
并在您的加载数据中调用refreshMenu():
private void refreshMenu() {
comment_count.setVisibility(View.VISIBLE);
comment_count.setText("" + post_data.getComment_count());
}
我发现了一个非常好的解决方案here,我正在使用它与kotlin。
首先,在drawable文件夹中,您必须创建item_count.xml
:
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="8dp" />
<solid android:color="#f20000" />
<stroke
android:width="2dip"
android:color="#FFF" />
<padding
android:bottom="5dp"
android:left="5dp"
android:right="5dp"
android:top="5dp" />
</shape>
在你的Activity_Main
布局中,有些像:
<RelativeLayout
android:id="@+id/badgeLayout"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_toRightOf="@+id/badge_layout1"
android:layout_gravity="end|center_vertical"
android:layout_marginEnd="5dp">
<RelativeLayout
android:id="@+id/relative_layout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button
android:id="@+id/btnBadge"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@mipmap/ic_notification" />
</RelativeLayout>
<TextView
android:id="@+id/txtBadge"
android:layout_width="18dp"
android:layout_height="18dp"
android:layout_alignRight="@id/relative_layout1"
android:background="@drawable/item_count"
android:text="22"
android:textColor="#FFF"
android:textSize="7sp"
android:textStyle="bold"
android:gravity="center"/>
</RelativeLayout>
你可以修改如下:
btnBadge.setOnClickListener { view ->
Snackbar.make(view,"badge click", Snackbar.LENGTH_LONG) .setAction("Action", null).show()
txtBadge.text = "0"
}
我发现了更好的方法。如果你想使用这样的东西
使用此依赖项
compile 'com.nex3z:notification-badge:0.1.0'
在drawable中创建一个xml文件并将其另存为Badge.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="oval">
<solid android:color="#66000000"/>
<size android:width="30dp" android:height="40dp"/>
</shape>
</item>
<item android:bottom="1dp" android:right="0.6dp">
<shape android:shape="oval">
<solid android:color="@color/Error_color"/>
<size android:width="20dp" android:height="20dp"/>
</shape>
</item>
</layer-list>
现在,无论您想要使用该徽章,都可以在xml中使用以下代码。借助此功能,您可以在图像的右上角看到该徽章或其他任何内容。
<com.nex3z.notificationbadge.NotificationBadge
android:id="@+id/badge"
android:layout_toRightOf="@id/Your_ICON/IMAGE"
android:layout_alignTop="@id/Your_ICON/IMAGE"
android:layout_marginLeft="-16dp"
android:layout_marginTop="-8dp"
android:layout_width="28dp"
android:layout_height="28dp"
app:badgeBackground="@drawable/Badge"
app:maxTextLength="2"
></com.nex3z.notificationbadge.NotificationBadge>
现在最后在yourFile.java上使用这2个简单的东西.1)定义
NotificationBadge mBadge;
2)你的循环或任何计算这个数字的东西使用这个:
mBadge.setNumber(your_LoopCount);
在这里,mBadge.setNumber(0)
不会显示任何内容。
希望这有帮助。