我正在尝试将图像保存到parse.com.我需要将其转换为字节数组.我决定尝试这样做的方法是使用apache commons-io.它运作不正常.这是我的代码片段;
private void saveImage() throws IOException {
// TODO Auto-generated method stub
InputStream header = new FileInputStream("/ClashMMA/res/drawable-hdpi/beatdown.jpg");
ParseFile file = new ParseFile(toByteArray(header));
try{
file.save();
} catch (ParseException e) {
e.printStackTrace();
}
ParseObject displayImage = new ParseObject("displayImage");
displayImage.put("header", file);
try{
displayImage.save();
} catch (ParseException e1){
e1.printStackTrace();
}
}
private byte[] toByteArray(InputStream header) throws IOException {
// TODO Auto-generated method stub
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
int l;
byte[] data = new byte[1024];
while ((l …我正在进行一项测试,让我参加另一项活动.当我到达那里时,我需要等待对话消失.
public class StressTest extends ActivityInstrumentationTestCase2<DashboardActivity> {
DashboardActivity activity;
ConsoleActivity consoleActivity;
public StressTest() {
super(DashboardActivity.class);
}
public void setUp() throws Exception {
super.setUp();
activity = getActivity();
}
public void testRun() throws InterruptedException {
schedule();
quickstart();
IP.enterIP();
<-----------FAILS HERE FROM A NPE------------------->
while (consoleActivity.getConnectDialog() != null && consoleActivity.getConnectDialog().isShown()){
Thread.sleep(
}
}
如你所见,我正在开始DashboardActivity.然后进入ConsoleActivity,我需要检查ConnectDialog.如果没有获得NPE,我怎么能这样做？
public void testRun() throws InterruptedException {
schedule();
quickstart();
IP.enterIP();
Thread.sleep(500);
getInstrumentation().runOnMainSync(new Runnable() {
@Override
public void run() {
Collection<Activity> resumedActivities = ActivityLifecycleMonitorRegistry.getInstance().getActivitiesInStage(Stage.RESUMED); …如果我的计数器超过30秒,它通常会在这里和那里跳过一秒钟.我把它倒数,显示屏显示.但它选择跳过随机数.它跳过的数字每次都是相同的数字.如果我改变计时器的长度(用户这样做),它会改变跳过的数字.我发布了我的代码;
免责声明:这是我的第一个(有用的)应用程序,所以它可能很糟糕或者结构不好.那没关系,让我知道.我可以接受批评.但是看一看,如果有人知道为什么某些秒钟会丢失,请加油.谢谢!
package com.ApphHose.runnersTimer;
//import a bunch of stuff
public class MainActivity extends Activity {
TextView text, lapNumber;
Button start;
boolean workrest, vibe;
int letsRun, lapCounter;
long length;
CountDownTimer timer;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text = (TextView) findViewById(R.id.tv);
lapNumber = (TextView) findViewById(R.id.tvLap);
start = (Button) findViewById(R.id.bStart);
letsRun = 2;
lapCounter = 1;
workrest = true;
vibe = true;
start.getBackground().setColorFilter(0xFF00FF00, PorterDuff.Mode.MULTIPLY);
start.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
start.setText("Stop");
start.getBackground().setColorFilter(0xFFFF0000, PorterDuff.Mode.MULTIPLY);
lapNumber.setText("Lap Number: 1");
lapCounter = …我正在测试一个不寻常的情况.我正在使用Espresso来编写我的测试.我知道Espresso和InstrumentationTestCase不是为了做到这一点.
我有一个我在其中一个课程中创建的监听器,它会通知我某个值的变化.我在我的测试套件中使用了监听器.
当我从侦听器获取值时,我需要声明值已更改为此类.
我的问题是测试将在我收到监听器的值之前结束.
private void sendSpeedChanges() {
setStaticSpeed(new Random().nextInt(10) + 2);
try {
runTestOnUiThread(new Runnable() {
@Override
public void run() {
consoleActivity.onSpeedChanged(getStaticSpeed(), false);
}
});
} catch (Throwable throwable) {
throwable.printStackTrace();
}
}
private void createSpeedDelegate() {
EspressoMachineValues.setOnSpeedChangeListener(new EspressoMachineValues.OnSpeedChangeListener() {
@Override
public void onSpeedChanged(double speed) {
//assert speed is correct.
assertTrue(getStaticSpeed() == speed);
}
});
}
这些是我正在使用的两种方法.这createSpeedDelegate()是最开始的电话.然后我打电话sendSpeedChanges.我需要做X次.
sendSpeedChanges()在检查了价值之前我无法打电话onSpeedChange()Thread.sleep();因为监听器在主线程上.我试过添加一个getInstrumentation().wait(2000);也getInstrumentation().waitForIdleSync();很明显,没有工作.
在一个完美的世界里,我会这样做:
for (int i …我有一个片段类，如下所示：
public class MessageFragment extends Fragment {
Context ctx;
Button compose;
public MessageFragment(Context ctx){
this.ctx = ctx;
}
...}
构造函数给出了一个错误，指出
这个片段应该提供一个默认的构造函数
同时，我还有 4 个其他片段类，它们的格式与此完全相同，但它们不会给出此错误。我怎样才能解决这个问题？
我想将图像添加到gridView.我从Parse.com上提取内容.我不会在资源文件夹中有它们,所以我找不到有用的教程.这是我到目前为止的代码;
progressDialog = ProgressDialog.show(manager.this, "", "Loading images...", true);
ParseQuery<ParseObject> query = ParseQuery.getQuery("fightGallery");
query.findInBackground(new FindCallback<ParseObject>() {
@Override
public void done(List<ParseObject> parseObjects, com.parse.ParseException e) {
if (e == null) {
int i = 0;
final int size = parseObjects.size();
while (i < size) {
ParseFile fileObject = parseObjects.get(i).getParseFile("image");
fileObject.getDataInBackground(new GetDataCallback() {
@Override
public void done(byte[] bytes, ParseException e) {
if (e == null) {
Log.d("Data", "We have data successfully");
Bitmap bmp = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
ImageView img = (ImageView) findViewById(R.id.imageView);
img.setImageBitmap(bmp);
Log.d("IMAGES", …我正在我的应用程序中实现RadioGroup.为此,我已导入import android.widget.RadioGroup和implemented OnCheckedChangeListener.但我仍然收到此错误:
RadioGroup类型中的方法setOnCheckedChangeListener(RadioGroup.OnCheckedChangeListener)不适用于参数(OpenedClass)
Java的:
OpenedClass.java
public class OpenedClass extends Activity implements OnClickListener,OnCheckedChangeListener{
TextView tv1,tv2;
RadioGroup selectionList;
Button rtn;
String gotBread;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.send);
initlize();
Bundle gotBusket = getIntent().getExtras();
gotBread = gotBusket.getString("KEY");
tv1.setText(gotBread);
}
private void initlize() {
// TODO Auto-generated method stub
tv1 = (TextView)findViewById(R.id.tvQuestion);
tv2 = (TextView)findViewById(R.id.textView2);
rtn = (Button)findViewById(R.id.bReturn);
rtn.setOnClickListener(this);
selectionList = (RadioGroup)findViewById(R.id.rgAnswers);
selectionList.setOnCheckedChangeListener(this);
}
@Override
public void onClick(View arg0) { …