我想开发一个可以自动搜索地点并在谷歌地图上显示地点的应用程序，我遵循了这个 link但是当我运行应用程序然后崩溃并显示错误
XML
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<com.example.awais.mapapp1.CustomAutoCompleteTextView
android:id="@+id/atv_places"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:hint="@string/str_atv_places"
android:singleLine="true" />
<fragment
android:id="@+id/map"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
class="com.google.android.gms.maps.SupportMapFragment"
android:layout_below="@id/atv_places" />
主 Activity
public class MainActivity extends FragmentActivity {
AutoCompleteTextView atvPlaces;
DownloadTask placesDownloadTask;
DownloadTask placeDetailsDownloadTask;
ParserTask placesParserTask;
ParserTask placeDetailsParserTask;
GoogleMap mMap;
final int PLACES=0;
final int PLACES_DETAILS=1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Getting a reference to the AutoCompleteTextView
atvPlaces = (AutoCompleteTextView) findViewById(R.id.atv_places);
atvPlaces.setThreshold(1);
// Adding textchange listener
atvPlaces.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// Creating a DownloadTask to download Google Places matching "s"
placesDownloadTask = new DownloadTask(PLACES);
// Getting url to the Google Places Autocomplete api
String url = getAutoCompleteUrl(s.toString());
// Start downloading Google Places
// This causes to execute doInBackground() of DownloadTask class
placesDownloadTask.execute(url);
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
// Setting an item click listener for the AutoCompleteTextView dropdown list
atvPlaces.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int index,
long id) {
ListView lv = (ListView) arg0;
SimpleAdapter adapter = (SimpleAdapter) arg0.getAdapter();
HashMap<String, String> hm = (HashMap<String, String>) adapter.getItem(index);
// Creating a DownloadTask to download Places details of the selected place
placeDetailsDownloadTask = new DownloadTask(PLACES_DETAILS);
// Getting url to the Google Places details api
String url = getPlaceDetailsUrl(hm.get("reference"));
// Start downloading Google Place Details
// This causes to execute doInBackground() of DownloadTask class
placeDetailsDownloadTask.execute(url);
}
});
}
private String getAutoCompleteUrl(String place){
// Obtain browser key from https://code.google.com/apis/console
String key = "key=AIzaSyCf6mbMvnLml4v-9Qls_oTmq4LvN_Qu2ec";
// place to be be searched
String input = "input="+place;
// place type to be searched
String types = "types=geocode";
// Sensor enabled
String sensor = "sensor=false";
// Building the parameters to the web service
String parameters = input+"&"+types+"&"+sensor+"&"+key;
// Output format
String output = "json";
// Building the url to the web service
String url = "https://maps.googleapis.com/maps/api/place/autocomplete/"+output+"?"+parameters;
return url;
}
private String getPlaceDetailsUrl(String ref){
// Obtain browser key from https://code.google.com/apis/console
String key = "key=AIzaSyCf6mbMvnLml4v-9Qls_oTmq4LvN_Qu2ec";
// reference of place
String reference = "reference="+ref;
// Sensor enabled
String sensor = "sensor=false";
// Building the parameters to the web service
String parameters = reference+"&"+sensor+"&"+key;
// Output format
String output = "json";
// Building the url to the web service
String url = "https://maps.googleapis.com/maps/api/place/details/"+output+"?"+parameters;
return url;
}
/** A method to download json data from url */
private String downloadUrl(String strUrl) throws IOException {
String data = "";
InputStream iStream = null;
HttpURLConnection urlConnection = null;
try{
URL url = new URL(strUrl);
// Creating an http connection to communicate with url
urlConnection = (HttpURLConnection) url.openConnection();
// Connecting to url
urlConnection.connect();
// Reading data from url
iStream = urlConnection.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(iStream));
StringBuffer sb = new StringBuffer();
String line = "";
while( ( line = br.readLine()) != null){
sb.append(line);
}
data = sb.toString();
br.close();
}catch(Exception e){
Log.d("Exception while downloading url", e.toString());
}finally{
iStream.close();
urlConnection.disconnect();
}
return data;
}
// Fetches data from url passed
private class DownloadTask extends AsyncTask<String, Void, String> {
private int downloadType=0;
// Constructor
public DownloadTask(int type){
this.downloadType = type;
}
@Override
protected String doInBackground(String... url) {
// For storing data from web service
String data = "";
try{
// Fetching the data from web service
data = downloadUrl(url[0]);
}catch(Exception e){
Log.d("Background Task",e.toString());
}
return data;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
switch(downloadType){
case PLACES:
// Creating ParserTask for parsing Google Places
placesParserTask = new ParserTask(PLACES);
// Start parsing google places json data
// This causes to execute doInBackground() of ParserTask class
placesParserTask.execute(result);
break;
case PLACES_DETAILS :
// Creating ParserTask for parsing Google Places
placeDetailsParserTask = new ParserTask(PLACES_DETAILS);
// Starting Parsing the JSON string
// This causes to execute doInBackground() of ParserTask class
placeDetailsParserTask.execute(result);
}
}
}
/** A class to parse the Google Places in JSON format */
private class ParserTask extends AsyncTask<String, Integer, List<HashMap<String,String>>> implements OnMapReadyCallback {
int parserType = 0;
public ParserTask(int type){
this.parserType = type;
}
@Override
protected List<HashMap<String, String>> doInBackground(String... jsonData) {
JSONObject jObject;
List<HashMap<String, String>> list = null;
try{
jObject = new JSONObject(jsonData[0]);
switch(parserType){
case PLACES :
PlaceJSONParser placeJsonParser = new PlaceJSONParser();
// Getting the parsed data as a List construct
list = placeJsonParser.parse(jObject);
break;
case PLACES_DETAILS :
PlaceDetailsJSONParser placeDetailsJsonParser = new PlaceDetailsJSONParser();
// Getting the parsed data as a List construct
list = placeDetailsJsonParser.parse(jObject);
}
}catch(Exception e){
Log.d("Exception",e.toString());
}
return list;
}
@Override
protected void onPostExecute(List<HashMap<String, String>> result) {
switch(parserType){
case PLACES :
String[] from = new String[] { "description"};
int[] to = new int[] { android.R.id.text1 };
// Creating a SimpleAdapter for the AutoCompleteTextView
SimpleAdapter adapter = new SimpleAdapter(getBaseContext(), result, android.R.layout.simple_list_item_1, from, to);
// Setting the adapter
atvPlaces.setAdapter(adapter);
break;
case PLACES_DETAILS :
HashMap<String, String> hm = result.get(0);
// Getting latitude from the parsed data
double latitude = Double.parseDouble(hm.get("lat"));
// Getting longitude from the parsed data
double longitude = Double.parseDouble(hm.get("lng"));
// Getting reference to the SupportMapFragment of the activity_main.xml
SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
// Getting GoogleMap from SupportMapFragment
fm.getMapAsync(this);
LatLng point = new LatLng(latitude, longitude);
CameraUpdate cameraPosition = CameraUpdateFactory.newLatLng(point);
CameraUpdate cameraZoom = CameraUpdateFactory.zoomBy(5);
// Showing the user input location in the Google Map
mMap.moveCamera(cameraPosition);
mMap.animateCamera(cameraZoom);
MarkerOptions options = new MarkerOptions();
options.position(point);
options.title("Position");
options.snippet("Latitude:"+latitude+",Longitude:"+longitude);
// Adding the marker in the Google Map
mMap.addMarker(options);
break;
}
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap=googleMap;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
日志
FATAL EXCEPTION: main Process: com.example.awais.mapapp1, PID: 13874 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.awais.mapapp1/com.example.awais.mapapp1.MainActivity}: android.view.InflateException: Binary XML file line #7: Binary XML file line #7: Error inflating class com.example.awais.mapapp1.CustomAutoCompleteTextView at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2477) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1345) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5452) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:762) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652) Caused by: android.view.InflateException: Binary XML file line #7: Binary XML file line #7: Error inflating class com.example.awais.mapapp1.CustomAutoCompleteTextView at android.view.LayoutInflater.inflate(LayoutInflater.java:539) at android.view.LayoutInflater.inflate(LayoutInflater.java:423) at android.view.LayoutInflater.inflate(LayoutInflater.java:374) at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:400) at android.app.Activity.setContentView(Activity.java:2172) at com.example.awais.mapapp1.MainActivity.onCreate(MainActivity.java:55) at android.app.Activity.performCreate(Activity.java:6251) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1110) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2370) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2477) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1345) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5452) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:762) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652) Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class com.example.awais.mapapp1.CustomAutoCompleteTextView at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:776) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) at android.view.LayoutInflater.rInflate(LayoutInflater.java:835) at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) at android.view.LayoutInflater.inflate(LayoutInflater.java:515) at android.view.LayoutInflater.inflate(LayoutInflater.java:423) at android.view.LayoutInflater.inflate(LayoutInflater.java:374) at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:400) at android.app.Activity.setContentView(Activity.java:2172) at com.example.awais.mapapp1.MainActivity.onCreate(MainActivity.java:55) at android.app.Activity.performCreate(Activity.java:6251) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1110) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2370) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2477) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1345) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5452) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:762) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652) Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.awais.mapapp1.CustomAutoCompleteTextView" on path: DexPathList[[zip file "/data/app/com.example.awais.mapapp1-2/base.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.awais.mapapp1-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.awais.mapapp1-2/lib/arm, /vendor/lib, /system/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) at java.lang.ClassLoader.loadClass(ClassLoader.java:511) at java.lang.ClassLoader.loadClass(ClassLoader.java:469) at android.view.LayoutInflater.createView(LayoutInflater.java:583) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:764) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) at android.view.LayoutInflater.rInflate(LayoutInflater.java:835) at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) at android.view.LayoutInflater.inflate(LayoutInflater.java:515) at android.view.LayoutInflater.inflate(LayoutInflater.java:423) at android.view.LayoutInflater.inflate(LayoutInflater.java:374) at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:400) at android.app.Activity.setContentView(Activity.java:2172) at com.example.awais.mapapp1.MainActivity.onCreate(MainActivity.java:55) at android.app.Activity.performCreate(Activity.java:6251) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1110) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2370) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2477) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1345) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5452) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:762) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652) Suppressed: java.lang.ClassNotFoundException: com.example.awais.mapapp1.CustomAutoCompleteTextView at java.lang.Class.classForName(Native Method) at java.lang.BootClassLoader.findClass(ClassLoader.java:781) at java.lang.BootClassLoader.
最佳答案
您需要完成下面的核对 list ，您的问题将(可能)得到解决:
- 检查您的布局 XML 文件中的包和类名是否正确写入
- 如果您的项目有多个模块，请在布局 XML 中使用的模块中检查类
com.example.awais.mapapp1.CustomAutoCompleteTextView的可用性 - 如果您使用的是 ProGuard/DexGuard 或任何此类工具，请确保在 XML 未受影响的情况下不会对其进行重命名(理想情况下永远不会发生这种情况)。
关于android - java.lang.RuntimeException : Unable to start activity ComponentInfo{. MainActivity} : android. view.InflateException:二进制 XML 文件行 #7，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43342068/