我试图改变自定义视图的背景图像,但取得了一些成功.图像会改变,但问题是我仍然看到旧图像的痕迹.当我在绘制新图像之前尝试清除画布时,它似乎不起作用.我创建一个位图来存储图像.在更改图像时,我在绘制新图像之前调用Canvas.drawColor(),但旧图像仍然存在.我已经尝试过drawColor(0),drawColor(Color.BLACK),c.drawColor(0,PorterDuff.Mode.CLEAR),并且没有上述工作.因此,我不得不发布这篇文章,以便从比我更有经验的思想中进行审核.
实际代码如下:
private int bgnd;
private boolean switching;
public void setBgnd(int incoming){
switching = true;
switch (incoming){
case R.drawable.image1:
bgnd = incoming;
this.invalidate();
break;
case R.drawable.image2:
bgnd = incoming;
this.invalidate();
break;
}
}
protected void onDraw(Canvas c){
if(switching == true){
Bitmap b = BitmapFactory.decodeResource(getResources(), bgnd);
c.drawColor(0, PorterDuff.Mode.CLEAR);
c.drawBitmap(b, 0, 0, null);
switching = false;
}else{
Bitmap b = BitmapFactory.decodeResource(getResources(), bgnd);
c.drawBitmap(b, 0, 0, null);
}
}
Run Code Online (Sandbox Code Playgroud) 我正试图通过我的公共DNS连接到phpmyadmin,我似乎无法让它工作.
我试过按照这些指示:
默认情况下,phpMyAdmin仅限于localhost.如果您希望可以从任何地方访问它,您应该按照虚拟机中的"如何启用phpMyAdmin或phpPgAdmin?"中描述的步骤进行操作FAQ:
SSH到实例在文件/opt/bitnami/apps/phpmyadmin/conf/phpmyadmin.conf中用"Allow from all"替换"Allow from 127.0.0.1"行重新启动apache:sudo /opt/bitnami/ctlscript.sh restart阿帕奇
此解决方案的问题是我在该目录中没有phpmyadmin.conf文件.我发现这与phpmyadmin文件夹中不存在Phpmyadmin.conf相关,但是这不允许我访问.
检查/opt/bitnami/apps/phpmyadmin/htdocs/config.inc.php并使用您的URL更改"$ cfg ['PmaAbsoluteUri']"选项.
我仍然得到同样的For security reasons, this URL is only accesible using localhost (127.0.0.1) as the hostname错误,这让我很生气.
有任何想法吗?如果需要,我可以随时发布配置文件中的相关内容.
我在使用 Jackson 序列化为 XML 时似乎遇到了问题。我的代码如下:
测试容器
package com.test;
import java.util.ArrayList;
import com.fasterxml.jackson.annotation.JsonProperty;
public class TestContainer {
private String testContainerID;
private String testContainerMessage;
private ArrayList<TestChild> testContainerChildren;
@JsonProperty("TestContainerID")
public String getTestContainerID() {
return testContainerID;
}
@JsonProperty("TestContainerID")
public void setTestContainerID(String testContainerID) {
this.testContainerID = testContainerID;
}
@JsonProperty("TestContainerMessage")
public String getTestContainerMessage() {
return testContainerMessage;
}
@JsonProperty("TestContainerMessage")
public void setTestContainerMessage(String testContainerMessage) {
this.testContainerMessage = testContainerMessage;
}
@JsonProperty("TestContainerChildren")
public ArrayList<TestChild> getTestContainerChildren() {
return testContainerChildren;
}
@JsonProperty("TestContainerChildren")
public void setTestContainerChildren(ArrayList<TestChild> testContainerChildren) {
this.testContainerChildren = testContainerChildren;
}
} …Run Code Online (Sandbox Code Playgroud) 我试图让Robolectric 2.1与我的项目一起工作并在我的WebView子类尝试在其WebSettings上调用setDatabasePath时获取MustOverrideException.我有一个自定义Application类,它尝试在onCreate中创建WebView子类的实例.作为WebView构造函数的一部分,它尝试设置数据库路径.
我原本以为,因为getSettings是从WebView调用的,所以调用会真正击中ShadowWebView,它应该返回一个不会抛出这些异常的TestWebSettings对象.相反,它似乎只是调用正常的WebSettings.getSettings并返回没有实现这些方法的东西.我尝试使用@Config(shadows = ShadowWebView.class)进行测试,但没有任何变化.我试图创建我的专业Web视图的自定义阴影并将其应用于测试,但它仍然调用常规自定义类.这是我尝试运行测试时看到的异常:
java.lang.RuntimeException: android.webkit.MustOverrideException: abstract function called: must be overriden!
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:231)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:177)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:80)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:47)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:69)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.messaging.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
at org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:103)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.messaging.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:355) …Run Code Online (Sandbox Code Playgroud) 我正在试图将一个ImageView放在LinearLayout的右下角....我把代码编写为:
style.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="90dp"
android:background="@drawable/my_background"
android:orientation="horizontal" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:src="@drawable/my_small_image" />
</LinearLayout>
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
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此代码导致右下角的ImageView"my_small_image",但我需要在左下角.有人对此有什么想法吗?
我希望这里有人可以帮助我.
最好的问候和提前感谢,Fadel.
我创建了一个类,它有几个protected成员,可以被其他类完全访问:
class MyClass {
protected String name;
}
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在我看来,这不应该编译:
MyClass mc = new MyClass();
mc.name = "foo";
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但它工作正常.当我成为会员时private,它按预期工作.怎么会这样?
一些注意事项,但我认为它们应该没有任何区别:
mc里面HashMap,Activity我正在尝试创建一个RSS feed解析应用程序,我是Android编程的新手.我目前有一个主活动,它会提示用户输入一个rss URL,以及所请求的rss feed的maxRows.我正在使用ROME库在Java中进行RSS feed解析.以下是我的代码:
package com.xetur.simplerss;
import java.io.IOException;
import java.net.URL;
import java.util.Iterator;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.sun.syndication.feed.synd.SyndContent;
import com.sun.syndication.feed.synd.SyndEntry;
import com.sun.syndication.feed.synd.SyndFeed;
import com.sun.syndication.io.FeedException;
import com.sun.syndication.io.SyndFeedInput;
import com.sun.syndication.io.XmlReader;
public class ListRowsActivity extends Activity {
private URL url;
private int maxRows;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_rows);
readFeed();
new Thread(new Runnable() {
public void run() {
readFeed();
}
}).start();
}
@SuppressWarnings("deprecation")
private void readFeed() {
XmlReader reader = …Run Code Online (Sandbox Code Playgroud) android ×4
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ondraw ×1
phpmyadmin ×1
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robolectric ×1
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