java Android 以编程方式将图像设置为 TextView 的背景
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/11472294/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Android set images to background of a TextView programmatically
提问by Arthur Kushman
I have an app where need to put images to background programmatically, but it doesn't work, the code is (2 methods from BankMenuParser):
我有一个应用程序需要以编程方式将图像置于后台，但它不起作用，代码是（来自 BankMenuParser 的 2 个方法）：
public void getProviderFields(String file, String providerId) throws DocumentException, IOException {
String xml = readFile(file);
Document doc = DocumentHelper.parseText(xml);
System.out.println("field name start");
List list = doc.selectNodes("//root/operators/operator[@id='" + providerId + "']/fields/field/name");
for (Iterator itr = list.iterator(); itr.hasNext();) {
// Attribute attr = (Attribute) itr.next();
// outList.add(attr.getValue());
Element el = (Element) itr.next();
Node elNode = (Node) itr.next();
// elNode.getText();
System.out.println("in array");
System.out.println("field name: " + elNode.getText().toString());
}
System.out.println("field name end");
}
public String getProviderImg(String file, String providerName) throws DocumentException, IOException {
String xml = readFile(file);
Document doc = DocumentHelper.parseText(xml);
String img = doc.selectSingleNode("//root/menu/group/operator_id[@name='" + providerName + "']/@image").getText();
return img;
}
public class Helpers {
public static int getResourceId(Context context, String name, String resourceType) {
return context.getResources().getIdentifier(name, resourceType, context.getPackageName());
}
These methods called in Activity:
Bundle menuExtras = getIntent().getExtras();
BankMenuParser bmp = new BankMenuParser();
String img = bmp.getProviderImg("data/menu.xml", menuExtras.getString("provider_name"));
TextView textView = (TextView) findViewById(R.id.provider_logo);
int resid = Helpers.getResourceId(PaymentActivity.this, img, "drawable");
textView.setBackgroundResource(resid);
bmp.getProviderFields("data/provider_fields.xml", menuExtras.getString("provider_id"));
I'm interested in set the background to the image in LogCat I see the output like:
我有兴趣将背景设置为 LogCat 中的图像我看到的输出如下：
07-13 13:27:36.178: I/System.out(677): mob_beeline.png
So, the image should be set right in all drawables I have a mob_beeline.png and layers.xml with content:
因此，图像应该在所有可绘制对象中设置正确，我有一个带有内容的 mob_beeline.png 和 layers.xml：
<layer-list
xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<bitmap android:src="@drawable/mob_beeline"
android:gravity="center" />
</item>
</layer-list>
