我无法将带孔的多边形添加到我的谷歌地图中。
它正在使用折线（我认为一次使用多边形）但现在却没有，是否存在孔逻辑。
以下是所有代码，它是在设置地图后发生的。
01-25 16:22:53.921: E/AndroidRuntime(22986): Caused by: java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 01-25 16:22:53.921: E/AndroidRuntime(22986): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:257) 01-25 16:22:53.921: E/AndroidRuntime(22986): at java.util.ArrayList.get(ArrayList.java:311) 01-25 16:22:53.921: E/AndroidRuntime(22986): at maps.y.bb.a(Unknown Source) 01-25 16:22:53.921: E/AndroidRuntime(22986): at maps.y.bb.c(Unknown Source) 01-25 16:22:53.921: E/AndroidRuntime(22986): at maps.y.bg.a(Unknown Source) 01-25 16:22:53.921: E/AndroidRuntime(22986): at maps.y.bg.b(Unknown Source) 01-25 16:22:53.921: E/AndroidRuntime(22986): at maps.y.ae.addPolygon(Unknown Source) 01-25 16:22:53.921: E/AndroidRuntime(22986): at com.google.android.gms.maps.internal.IGoogleMapDelegate$Stub.onTransact(IGoogleMapDelegate.java:152)
try {
JSONObject boundaries = new JSONObject("{\"type\":\"MultiPolygon\",\"coordinates\":[[[[-80.735555859,35.0606584407],[-80.7297754512,35.0651878022],[-80.729139294,35.0656818503],[-80.7289250745,35.065900852],[-80.7286221912,35.0660671391],[-80.7282894137,35.066312794],[-80.7275260823,35.0669496861],[-80.7230724393,35.0660242895],[-80.7227950616,35.0661147593],[-80.7218902721,35.0659176785],[-80.722176045,35.0657643995],[-80.720961508,35.0641575183],[-80.7209758716,35.0629317403],[-80.7272283465,35.0628131662],[-80.726641114,35.061423483],[-80.7265854346,35.061015353],[-80.7266510423,35.0606220672],[-80.7235677631,35.0606937582],[-80.7234837301,35.0595787025],[-80.7255096391,35.0597210677],[-80.7270440474,35.0598206983],[-80.7271985668,35.0591829945],[-80.7274183452,35.0587709241],[-80.7277152978,35.0585124776],[-80.7284566533,35.0579768923],[-80.727780986,35.0597106844],[-80.7299847264,35.0599581722],[-80.735555859,35.0606584407]]],[[[-80.7200742118,35.0674134672],[-80.7186999337,35.0705562642],[-80.7164176998,35.069933693],[-80.7150980153,35.0696170679],[-80.7157433595,35.0657510316],[-80.7152719628,35.0657629702],[-80.7150541804,35.0646523049],[-80.7155138273,35.0644640927],[-80.7169133321,35.0639508082],[-80.7172970965,35.0637601058],[-80.7175728371,35.0635834077],[-80.7183107407,35.0631329539],[-80.7184931359,35.0630502037],[-80.7186006099,35.0648619253],[-80.7185879713,35.0648540961],[-80.7186006849,35.0648654865],[-80.7200742118,35.0674134672]]],[[[-80.6892017218,35.0865938467],[-80.6836074596,35.0872774004],[-80.6836037958,35.0872706912],[-80.683607554,35.087262573],[-80.6838084759,35.0843125317],[-80.6838093023,35.0838010413],[-80.6907731212,35.082005808],[-80.6906868717,35.0819147663],[-80.6914540109,35.0819508048],[-80.6923350028,35.0819883607],[-80.6922022291,35.0818062139],[-80.6906081064,35.081775524],[-80.6892627084,35.0801975391],[-80.6880259464,35.0787334166],[-80.6876700467,35.0784015634],[-80.6863873389,35.0787500748],[-80.6833236198,35.0795693995],[-80.682052189,35.0799145893],[-80.6813631325,35.078511382],[-80.6824880399,35.0773168152],[-80.6831273312,35.0766747942],[-80.6839730169,35.0757398452],[-80.6847449558,35.0749088381],[-80.6851125671,35.0745232176],[-80.6868562873,35.0762921663],[-80.6869385663,35.0762348787],[-80.6880385407,35.075857727],[-80.6893815702,35.0756767665],[-80.6893041844,35.0757870067],[-80.6895418941,35.0757244239],[-80.6910892479,35.0753347457],[-80.6953548167,35.074308825],[-80.6947217548,35.0726824065],[-80.6938249008,35.0708171642],[-80.6928755869,35.0707476456],[-80.6926063661,35.0700471051],[-80.6965836865,35.0702385147],[-80.6981317926,35.0702759198],[-80.6993134907,35.0702479401],[-80.699303851,35.0720088657],[-80.7044604692,35.0700231034],[-80.7059676219,35.0694258442],[-80.7064318242,35.070114517],[-80.7062358632,35.0718825479],[-80.7070931359,35.0713564697],[-80.7099609034,35.0704230355],[-80.7099936802,35.0705152827],[-80.7100080651,35.0705503962],[-80.7099495884,35.0705908523],[-80.7100187353,35.0707057082],[-80.7100167527,35.0707880413],[-80.7100972756,35.0709149296],[-80.7101379822,35.0710881063],[-80.7102138409,35.0711693359],[-80.7101846935,35.071247158],[-80.7102411258,35.0714097659],[-80.7103023493,35.0715003479],[-80.710389265,35.0715783724],[-80.707476454,35.073601],[-80.7077178913,35.0739755754],[-80.7087496883,35.0733147365],[-80.7090951077,35.0738737844],[-80.7115336827,35.0724004396],[-80.7115289543,35.0723517336],[-80.7119904436,35.0722567899],[-80.7119402102,35.0721599562],[-80.7120096157,35.0721101991],[-80.712379284,35.0734705994],[-80.71269176,35.0745787999],[-80.7130325591,35.0757993846],[-80.710920954,35.0773077532],[-80.7093642515,35.0784028049],[-80.7099841194,35.080555276],[-80.7091997899,35.0811729934],[-80.7086062698,35.0816605739],[-80.706153571,35.0835724102],[-80.7052694052,35.0842067533],[-80.7034908473,35.0856980884],[-80.7023961873,35.0865548562],[-80.7013399763,35.087478134],[-80.7000482398,35.0884900711],[-80.6986890109,35.0896462123],[-80.6963494752,35.0914593015],[-80.6948488535,35.0925786583],[-80.694848095,35.0926560399],[-80.6944683903,35.0943039003],[-80.6928489794,35.0942189034],[-80.6912333698,35.0954877374],[-80.6814301091,35.1033733546],[-80.6759910014,35.1036684268],[-80.676284034,35.104210002],[-80.6762103702,35.1042354101],[-80.67719044,35.1057185102],[-80.6775701585,35.1063259403],[-80.6754613322,35.1076781632],[-80.6748644376,35.1080552826],[-80.673594298,35.1090666249],[-80.6719077296,35.1103946423],[-80.6703790777,35.1116472926],[-80.6699256895,35.1112450928],[-80.6696705955,35.112193583],[-80.6690859143,35.1120827809],[-80.668908562,35.1126613551],[-80.6680473027,35.1124955642],[-80.6678832061,35.1131327573],[-80.6677639689,35.1131069686],[-80.667556535,35.1131220256],[-80.667453441,35.1131600278],[-80.666459359,35.1137102408],[-80.6663306762,35.1137668849],[-80.6660559502,35.1139383296],[-80.6655854342,35.1143319477],[-80.6654890957,35.1145192204],[-80.6650770434,35.1148693555],[-80.6647153446,35.1145700964],[-80.6636426861,35.11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JSONArray coordinates = boundaries.getJSONArray("coordinates");
for(int i = 0; i < coordinates.length(); i++){
try {
JSONArray currentPerimeter = coordinates.getJSONArray(i).getJSONArray(0);
ArrayList<LatLng> holesArray = new ArrayList<LatLng>();
ArrayList<ArrayList<LatLng>> holesHolder = new ArrayList<ArrayList<LatLng>>();
ArrayList<LatLng> mainArray = new ArrayList<LatLng>();
for(int j = 0; j < currentPerimeter.length(); j++){ //this just adds outlines and outlying objects, but no holes.
mainArray.add(new LatLng(currentPerimeter.getJSONArray(j).getDouble(1), currentPerimeter.getJSONArray(j).getDouble(0)));
}
JSONArray holes = coordinates.getJSONArray(i);
if(holes.length()>0)
{
//new for loop to make holes
for(int j = 1; j < holes.length(); j++)
{
holesArray.add(new LatLng(holes.getJSONArray(j).getDouble(1), holes.getJSONArray(j).getDouble(0)));
}
}
mMap.addPolygon(new PolygonOptions().strokeWidth(3).strokeColor(0xFFEE8888).addAll(mainArray).addHole(holesArray));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
答案 0 :(得分：1)
问题似乎是addHole无法防止空洞的零长度数组。因此，您应该检查以确保不传递零长度数组，因为您传递的是零长度数组。把那个守卫放进去并记录你所捕获的例外情况就会发现你的解析对你的漏洞来说是错误的。
具体来说，
holesArray.add(new LatLng(holes.getJSONArray(j).getDouble(1), holes.getJSONArray(j).getDouble(0)));
投掷 -
org.json.JSONException: Value [-80.6696999375,35.0941296997] at 1 of type org.json.JSONArray cannot be converted to double
因此，您尝试将数组解析为double。我认为你的问题是这一行 -
JSONArray holes = coordinates.getJSONArray(i);
应该是别的东西。我之前的建议让它起作用，但我不认为它在语义上是正确的，因为它重复了与上面相同的数组。你的JSON漏洞应该在哪里，但是它应该是你应该开始看的地方。也许是这样的，
if (coordinates.getJSONArray(i).length() > 1) {
JSONArray holes = coordinates.getJSONArray(i).getJSONArray(1);
if (holes.length() > 0) {
// new for loop to make holes
for (int j = 1; j < holes.length(); j++) {
holesArray.add(new LatLng(holes.getJSONArray(j).getDouble(1), holes.getJSONArray(j).getDouble(0)));
}
}
}