具有 JSON 数据而不是常量数据的通用图像加载器
Universal Image Loader with JSON Data instead of constant data
我有一个 gridview 来显示来自图像 url 的图像。我使用通用图像加载器来显示和缓存图像。在具有图像 url 的库常量中有一个 class。我想用 json 获取 url，但我没有这样做并得到空指针异常。请帮忙。非常感谢。
这是常量 class，其中包含图片网址：
public final class Constants {
public static final String[] IMAGES = new String[] {
// Heavy images
"https://lh6.googleusercontent.com/-55osAWw3x0Q/URquUtcFr5I/AAAAAAAAAbs/rWlj1RUKrYI/s1024/A%252520Photographer.jpg",
"https://lh4.googleusercontent.com/--dq8niRp7W4/URquVgmXvgI/AAAAAAAAAbs/-gnuLQfNnBA/s1024/A%252520Song%252520of%252520Ice%252520and%252520Fire.jpg",
"https://lh5.googleusercontent.com/-7qZeDtRKFKc/URquWZT1gOI/AAAAAAAAAbs/hqWgteyNXsg/s1024/Another%252520Rockaway%252520Sunset.jpg",
"https://lh3.googleusercontent.com/--L0Km39l5J8/URquXHGcdNI/AAAAAAAAAbs/3ZrSJNrSomQ/s1024/Antelope%252520Butte.jpg",
"https://lh6.googleusercontent.com/-8HO-4vIFnlw/URquZnsFgtI/AAAAAAAAAbs/WT8jViTF7vw/s1024/Antelope%252520Hallway.jpg",
"https://lh4.googleusercontent.com/-WIuWgVcU3Qw/URqubRVcj4I/AAAAAAAAAbs/YvbwgGjwdIQ/s1024/Antelope%252520Walls.jpg",
"https://lh6.googleusercontent.com/-UBmLbPELvoQ/URqucCdv0kI/AAAAAAAAAbs/IdNhr2VQoQs/s1024/Apre%2525CC%252580s%252520la%252520Pluie.jpg",
"https://lh3.googleusercontent.com/-s-AFpvgSeew/URquc6dF-JI/AAAAAAAAAbs/Mt3xNGRUd68/s1024/Backlit%252520Cloud.jpg",
"https://lh5.googleusercontent.com/-bvmif9a9YOQ/URquea3heHI/AAAAAAAAAbs/rcr6wyeQtAo/s1024/Bee%252520and%252520Flower.jpg",
"https://lh5.googleusercontent.com/-n7mdm7I7FGs/URqueT_BT-I/AAAAAAAAAbs/9MYmXlmpSAo/s1024/Bonzai%252520Rock%252520Sunset.jpg",
"https://lh6.googleusercontent.com/-4CN4X4t0M1k/URqufPozWzI/AAAAAAAAAbs/8wK41lg1KPs/s1024/Caterpillar.jpg",
"https://lh3.googleusercontent.com/-rrFnVC8xQEg/URqufdrLBaI/AAAAAAAAAbs/s69WYy_fl1E/s1024/Chess.jpg",
"https://lh5.googleusercontent.com/-WVpRptWH8Yw/URqugh-QmDI/AAAAAAAAAbs/E-MgBgtlUWU/s1024/Chihuly.jpg",
"https://lh5.googleusercontent.com/-0BDXkYmckbo/URquhKFW84I/AAAAAAAAAbs/ogQtHCTk2JQ/s1024/Closed%252520Door.jpg",
"https://lh3.googleusercontent.com/-PyggXXZRykM/URquh-kVvoI/AAAAAAAAAbs/hFtDwhtrHHQ/s1024/Colorado%252520River%252520Sunset.jpg",
"https://lh3.googleusercontent.com/-ZAs4dNZtALc/URquikvOCWI/AAAAAAAAAbs/DXz4h3dll1Y/s1024/Colors%252520of%252520Autumn.jpg",
"https://lh4.googleusercontent.com/-GztnWEIiMz8/URqukVCU7bI/AAAAAAAAAbs/jo2Hjv6MZ6M/s1024/Countryside.jpg",
"https://lh4.googleusercontent.com/-bEg9EZ9QoiM/URquklz3FGI/AAAAAAAAAbs/UUuv8Ac2BaE/s1024/Death%252520Valley%252520-%252520Dunes.jpg",
"https://lh6.googleusercontent.com/-ijQJ8W68tEE/URqulGkvFEI/AAAAAAAAAbs/zPXvIwi_rFw/s1024/Delicate%252520Arch.jpg",
};
public static class Config {
public static final boolean DEVELOPER_MODE = false;
}
public static class Extra {
public static final String FRAGMENT_INDEX = "com.nostra13.example.universalimageloader.FRAGMENT_INDEX";
public static final String IMAGE_POSITION = "com.nostra13.example.universalimageloader.IMAGE_POSITION";
}
这是我的 JsonParser，我试图在其中设置 imageUrls =mobile; // in json parser 而不是 String[]imageUrls = Constants.IMAGES;
@Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler_ sh = new ServiceHandler_();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler_.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
contacts = jsonObj.getJSONArray(TAG_PRODUCTS);
// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
// Phone node is JSON Object
JSONObject phone = c.getJSONObject(TAG_IMAGES);
String mobile = phone.getString(TAG_X220);
***/* I want to set each url to the array here*/***
imageUrls[i]=mobile;
// tmp hashmap for single contact
HashMap<String, String> contact = new HashMap<String, String>();
// adding each child node to HashMap key => value
contact.put(TAG_X220, mobile);
// adding contact to contact list
contactList.add(contact);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
这里是 log cat 输出：
02-04 13:13:47.806: E/AndroidRuntime(1957): FATAL EXCEPTION: main
02-04 13:13:47.806: E/AndroidRuntime(1957): java.lang.NullPointerException
02-04 13:13:47.806: E/AndroidRuntime(1957): at com.example.imageLoaderLibrary.ImageGridFragment$ImageAdapter.getCount(ImageGridFragment.java:112)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.GridView.setAdapter(GridView.java:182)
02-04 13:13:47.806: E/AndroidRuntime(1957): at com.example.imageLoaderLibrary.ImageGridFragment.onCreateView(ImageGridFragment.java:83)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1786)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:947)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1126)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1489)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:486)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.view.ViewPager.populate(ViewPager.java:1073)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.view.ViewPager.populate(ViewPager.java:919)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2148)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:617)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:399)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2148)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1850)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1102)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1275)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4214)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.Choreographer$CallbackRecord.run(Chor
我觉得你应该先打电话给
String[] imageUrls= new String[];
String[]imageUrls大小固定，以后无法固定。在第一个参数中，String[]imageUrls = Constants.IMAGES; Constants.IMAGES 具有固定大小，因此您的 imageUrls 也具有大小。可能您在其上方声明为 String[] imageUrls= new String[]; 并且它没有大小。在您的 JSON 解析器中，您尝试修复它的大小，但您不能。试试这个声明 static List<String> imageUrls = new ArrayList<String>(); 有了这个你可以确定你的尺寸并在其中添加你的项目。
我有一个 gridview 来显示来自图像 url 的图像。我使用通用图像加载器来显示和缓存图像。在具有图像 url 的库常量中有一个 class。我想用 json 获取 url，但我没有这样做并得到空指针异常。请帮忙。非常感谢。
这是常量 class，其中包含图片网址：
public final class Constants {
public static final String[] IMAGES = new String[] {
// Heavy images
"https://lh6.googleusercontent.com/-55osAWw3x0Q/URquUtcFr5I/AAAAAAAAAbs/rWlj1RUKrYI/s1024/A%252520Photographer.jpg",
"https://lh4.googleusercontent.com/--dq8niRp7W4/URquVgmXvgI/AAAAAAAAAbs/-gnuLQfNnBA/s1024/A%252520Song%252520of%252520Ice%252520and%252520Fire.jpg",
"https://lh5.googleusercontent.com/-7qZeDtRKFKc/URquWZT1gOI/AAAAAAAAAbs/hqWgteyNXsg/s1024/Another%252520Rockaway%252520Sunset.jpg",
"https://lh3.googleusercontent.com/--L0Km39l5J8/URquXHGcdNI/AAAAAAAAAbs/3ZrSJNrSomQ/s1024/Antelope%252520Butte.jpg",
"https://lh6.googleusercontent.com/-8HO-4vIFnlw/URquZnsFgtI/AAAAAAAAAbs/WT8jViTF7vw/s1024/Antelope%252520Hallway.jpg",
"https://lh4.googleusercontent.com/-WIuWgVcU3Qw/URqubRVcj4I/AAAAAAAAAbs/YvbwgGjwdIQ/s1024/Antelope%252520Walls.jpg",
"https://lh6.googleusercontent.com/-UBmLbPELvoQ/URqucCdv0kI/AAAAAAAAAbs/IdNhr2VQoQs/s1024/Apre%2525CC%252580s%252520la%252520Pluie.jpg",
"https://lh3.googleusercontent.com/-s-AFpvgSeew/URquc6dF-JI/AAAAAAAAAbs/Mt3xNGRUd68/s1024/Backlit%252520Cloud.jpg",
"https://lh5.googleusercontent.com/-bvmif9a9YOQ/URquea3heHI/AAAAAAAAAbs/rcr6wyeQtAo/s1024/Bee%252520and%252520Flower.jpg",
"https://lh5.googleusercontent.com/-n7mdm7I7FGs/URqueT_BT-I/AAAAAAAAAbs/9MYmXlmpSAo/s1024/Bonzai%252520Rock%252520Sunset.jpg",
"https://lh6.googleusercontent.com/-4CN4X4t0M1k/URqufPozWzI/AAAAAAAAAbs/8wK41lg1KPs/s1024/Caterpillar.jpg",
"https://lh3.googleusercontent.com/-rrFnVC8xQEg/URqufdrLBaI/AAAAAAAAAbs/s69WYy_fl1E/s1024/Chess.jpg",
"https://lh5.googleusercontent.com/-WVpRptWH8Yw/URqugh-QmDI/AAAAAAAAAbs/E-MgBgtlUWU/s1024/Chihuly.jpg",
"https://lh5.googleusercontent.com/-0BDXkYmckbo/URquhKFW84I/AAAAAAAAAbs/ogQtHCTk2JQ/s1024/Closed%252520Door.jpg",
"https://lh3.googleusercontent.com/-PyggXXZRykM/URquh-kVvoI/AAAAAAAAAbs/hFtDwhtrHHQ/s1024/Colorado%252520River%252520Sunset.jpg",
"https://lh3.googleusercontent.com/-ZAs4dNZtALc/URquikvOCWI/AAAAAAAAAbs/DXz4h3dll1Y/s1024/Colors%252520of%252520Autumn.jpg",
"https://lh4.googleusercontent.com/-GztnWEIiMz8/URqukVCU7bI/AAAAAAAAAbs/jo2Hjv6MZ6M/s1024/Countryside.jpg",
"https://lh4.googleusercontent.com/-bEg9EZ9QoiM/URquklz3FGI/AAAAAAAAAbs/UUuv8Ac2BaE/s1024/Death%252520Valley%252520-%252520Dunes.jpg",
"https://lh6.googleusercontent.com/-ijQJ8W68tEE/URqulGkvFEI/AAAAAAAAAbs/zPXvIwi_rFw/s1024/Delicate%252520Arch.jpg",
};
public static class Config {
public static final boolean DEVELOPER_MODE = false;
}
public static class Extra {
public static final String FRAGMENT_INDEX = "com.nostra13.example.universalimageloader.FRAGMENT_INDEX";
public static final String IMAGE_POSITION = "com.nostra13.example.universalimageloader.IMAGE_POSITION";
}
这是我的 JsonParser，我试图在其中设置 imageUrls =mobile; // in json parser 而不是 String[]imageUrls = Constants.IMAGES;
@Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler_ sh = new ServiceHandler_();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler_.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
contacts = jsonObj.getJSONArray(TAG_PRODUCTS);
// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
// Phone node is JSON Object
JSONObject phone = c.getJSONObject(TAG_IMAGES);
String mobile = phone.getString(TAG_X220);
***/* I want to set each url to the array here*/***
imageUrls[i]=mobile;
// tmp hashmap for single contact
HashMap<String, String> contact = new HashMap<String, String>();
// adding each child node to HashMap key => value
contact.put(TAG_X220, mobile);
// adding contact to contact list
contactList.add(contact);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
这里是 log cat 输出：
02-04 13:13:47.806: E/AndroidRuntime(1957): FATAL EXCEPTION: main
02-04 13:13:47.806: E/AndroidRuntime(1957): java.lang.NullPointerException
02-04 13:13:47.806: E/AndroidRuntime(1957): at com.example.imageLoaderLibrary.ImageGridFragment$ImageAdapter.getCount(ImageGridFragment.java:112)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.GridView.setAdapter(GridView.java:182)
02-04 13:13:47.806: E/AndroidRuntime(1957): at com.example.imageLoaderLibrary.ImageGridFragment.onCreateView(ImageGridFragment.java:83)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1786)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:947)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1126)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1489)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:486)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.view.ViewPager.populate(ViewPager.java:1073)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.view.ViewPager.populate(ViewPager.java:919)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2148)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:617)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:399)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-04 13:13:47.806: E/AndroidRuntime(1957): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2148)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.View.measure(View.java:15172)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1850)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1102)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1275)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4214)
02-04 13:13:47.806: E/AndroidRuntime(1957): at android.view.Choreographer$CallbackRecord.run(Chor
我觉得你应该先打电话给
String[] imageUrls= new String[];
String[]imageUrls大小固定，以后无法固定。在第一个参数中，String[]imageUrls = Constants.IMAGES; Constants.IMAGES 具有固定大小，因此您的 imageUrls 也具有大小。可能您在其上方声明为 String[] imageUrls= new String[]; 并且它没有大小。在您的 JSON 解析器中，您尝试修复它的大小，但您不能。试试这个声明 static List<String> imageUrls = new ArrayList<String>(); 有了这个你可以确定你的尺寸并在其中添加你的项目。