android-xml

问题 I want to create a XML Layout that will support all the Screen sizes. In the XML, first element is ImageView , second one is TextView and third one is Button with an Image. So the TextView should be the exact position in all the devices (small, medium, large, xLarge, etc). How can I do this? Here is the XML output should be look like: Here is the XML file that i created for the Normal/Medium Layout: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android

问题 I'm want to change the up icon with applying the following style to my activity, but it doesn't work and but I still get the default black '<' icon. Can anyone find out what is missing here? <style name="AppTheme.ActionBar" parent="@style/Theme.Sherlock.Light"> <item name="actionBarStyle">@style/actionBarStyle</item> <item name="android:actionBarStyle">@style/actionBarStyle</item> </style> <style name="actionBarStyle" parent="@style/Widget.Sherlock.Light.ActionBar.Solid"> <item name="android

问题 I'm want to change the up icon with applying the following style to my activity, but it doesn't work and but I still get the default black '<' icon. Can anyone find out what is missing here? <style name="AppTheme.ActionBar" parent="@style/Theme.Sherlock.Light"> <item name="actionBarStyle">@style/actionBarStyle</item> <item name="android:actionBarStyle">@style/actionBarStyle</item> </style> <style name="actionBarStyle" parent="@style/Widget.Sherlock.Light.ActionBar.Solid"> <item name="android

问题 I am trying to place an ImageView on the overlap point between two layouts. In the picture below, my goal would be to place the ImageView where the white square is. NOTE: The overlap point will not necessarily be centered vertically as shown below Is this possible in XML? My only guess right now is to do this in the actual code itself. EDIT 8/3/2016: For reference, I think ConstraintLayouts may be the best future solution for these types of problems http://tools.android.com/tech-docs/layout

问题 I am working on an application, with following XML. but whenI try to clean/build my project the following error occurs: "error: Error parsing XML: not well-formed (invalid token)" <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="

问题 I have a class A that extends class View . I have a class B that extends class A . Now I'm trying to add class B into my xml however I'm unable to do that whereas I'm able to add class A into my xml. One more thing which I've noticed is that all other custom classes which directly extends View are visible inside my xml. I wanna know whether is there any way of adding a class which extends another class which in turn extends View into my xml? NOTE : I'm using proper xml format and complete

问题 My floating button image looks like this It's a smaller button inside a larger circle, How do I fix this? layout file: <android.support.design.widget.FloatingActionButton android:id="@+id/addToKitchenButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="16dp" android:layout_gravity="bottom|end" android:layout_alignParentBottom="true" android:layout_alignParentEnd="true" android:src="@drawable/ic_add_circle_black_50dp" /> vector code: <vector

问题 So I am creating an app with 5 activities that have 5 separate soundBoards in which are controlled by 5 separate soundPools. I am also using a navigational drawer on each activity. When I run the app it can open the first two activities but whenever I call the third to open the app stops working. On the memory monitor the memory usage peaks to 64MB and then it crashes. Is it just the emulator is limited to 64MB and that it will work fine on a phone or do I have a memory leak somewhere? Do I

问题 Im trying to figure out why I am unable to get a valid string from two edittexts The following lines are what I am talking about String newPin = etNewPassword.getText().toString(); String conPin = etConfirmPassword.getText().toString(); Below is the entire file public class PasswordDialogPreference extends DialogPreference { TextView tvOldPassword; TextView tvNewPassword; TextView tvConfirmPassword; EditText etOldPassword; EditText etNewPassword; EditText etConfirmPassword; SharedPreferences

问题 I am trying to write to an existing XML file in the /res/xml directory on an Android device. Two questions: 1) Are these files able to be overwritten? 2) If so, how can I obtain a handle to that file? I am trying this to no avail: FileOutputStream fos; try { fos = openFileOutput("/res/xml/scores.xml", Context.MODE_PRIVATE); fos.write(writer.toString().getBytes()); fos.close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) {