我有一个像下面的xml文件,我将用它来设置背景Textview:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient android:endColor="#CCCCCC" android:startColor="#CCCCCC"
android:angle="270" />
<stroke android:width="1dp" android:color="#999999" />
<corners android:bottomRightRadius="0dp"
android:bottomLeftRadius="0dp" android:topLeftRadius="0dp"
android:topRightRadius="0dp" /></shape>
上面的Xml我将在main.xml中设置为TextView的背景,如下所示:
<TextView
android:id="@+id/rowtext3"
android:text="Availablity"
android:layout_height="25px"
android:layout_width="60px"
android:textSize="10px"
android:textStyle="bold"
android:textColor="@color/black"
android:gravity="center"
android:background="@drawable/row"
/>
但我希望这可以从代码而不是Xml.我已经完成了我在Xml中所做的一切,如字体,宽度,高度,字体动态通过代码,但不能设置我在Xml文件中提到的背景.我们如何将Xml文件的内容设置为textview的背景,类似于我们在main.xml中将背景设置为XML的方式.
在代码我这样做:
t1=new TextView(this); <br>
t1.setText(ed1.getText()); <br>
t1.setHeight(25); <br>
t1.setWidth(60); <br>
t1.setTextSize(10); <br>
但我没有找到如何设置背景,即如何将XML内容设置为背景？
任何人都可以帮我解决这个问题吗？
提前致谢,
我在 Android 上读取 firebase 数据库时遇到 oom 错误。我正在使用选项卡片段，这是其中一个选项卡的代码..
public class EventsTab extends Fragment {
ListView listView;
ArrayList<String> titles = new ArrayList<String>();
ArrayList<String> descriptions = new ArrayList<String>();
ArrayList<String> dates = new ArrayList<String>();
ArrayList<String> urls = new ArrayList<String>();
int counter = 0;
float x1,x2;
float y1, y2;
static ProgressDialog dialog;
static AnimationDrawable frameAnimation;
static ProgressBar mProgressBar;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
titles = new ArrayList<String>();
urls = new ArrayList<String>();
dates = new ArrayList<String>();
descriptions = new ArrayList<String>();
View …我正在一个包含两个选项卡的屏幕上工作。我在这里使用 AppCompatActivity。我在选项卡中设置了带有文本的图标，但我希望图像右对齐，并且它们之间应该有一些空间。代码如下：
1. Activity_ProfessionalTimeline.java
public class Activity_ProfessionalTimeline extends AppCompatActivity implements OnClickListener {
private Toolbar toolbatTop;
private TabLayout tabLayout;
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
private int[] tabIcons = {
R.drawable.social,
R.drawable.professional
};
private ImageView _img_Profile;
private TextView _txt_UserName;
private TextView _txt_UserDestination;
ArrayList<Model_LoginDetails> arr_LogInUserDetails = new ArrayList<Model_LoginDetails>();
private ImageView _imt_userImage;
private ListView _listView_SelectOpition;
private boolean profilebtnstatus = false;
private RelativeLayout _relativelayour_status;
private ListView _listviewmoroption;
private DrawerLayout drawer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_professionalttimeline);
// Top Toolbar …嗨我想在我的视图中显示存储在SD卡中的3或4个图像,图像的大小约为1-2 MB.我的问题是当我在imageview中使用图像然后它抛出内存异常我在将图像解码为位图时创建了位和传递选项
02-26 13:16:54.946: ERROR/dalvikvm-heap(23410): 15980544-byte external allocation too large for this process.
02-26 13:16:54.946: ERROR/dalvikvm(23410): Out of memory: Heap Size=3407KB, Allocated=2801KB, Bitmap Size=15630KB, Limit=21884KB
02-26 13:16:54.946: ERROR/dalvikvm(23410): Trim info: Footprint=3463KB, Allowed Footprint=3655KB, Trimmed=248KB
02-26 13:16:54.946: ERROR/GraphicsJNI(23410): VM won't let us allocate 15980544 bytes
02-26 13:16:54.986: ERROR/AndroidRuntime(23410): FATAL EXCEPTION: main
02-26 13:16:54.986: ERROR/AndroidRuntime(23410): java.lang.OutOfMemoryError: bitmap size exceeds VM budget
02-26 13:16:54.986: ERROR/AndroidRuntime(23410): at android.graphics.BitmapFactory.nativeDecodeFile(Native Method)
02-26 13:16:54.986: ERROR/AndroidRuntime(23410): at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:325)
任何机构都可以提前帮助我解决我的问题
这是我的片段页面,我正在尝试创建一个列表视图
public class MessagesFragment extends Fragment {
ArrayList<String> brands= new ArrayList<String>();
//String[] brands = {"Android","IPhone","WindowsMobile","Blackberry","WebOS","Ubuntu","Windows7","Max OS X"};
public MessagesFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_messages, container, false);
brands.add("microsoft");
brands.add("ios" );
brands.add("android");
AdapterListView adapter = new AdapterListView(brands,getActivity());
ListView listView = (ListView)rootView.findViewById(R.id.mobile_list);
listView.setAdapter(adapter);
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_messages, container, false);
}
}
这是我的适配器类
public class …