目前，我正在开发一个由Toolbar而非常规ActionBar组成的Android项目。
我在名为Toolbar的单独layout文件中定义了tool_bar.xml，然后在我需要的每个布局中包含ToolBar。
我的活动的布局文件名为acceptor.xml。
我的Java文件名是Acceptor.java。
我的问题是，每当include tool_bar.xml acceptor.xml id并提供包含的布局force close error时，它就会给我一个Logcat，删除id属性后，它会顺利进行。
请帮忙！
xml，Java个文件，tool_bar.xml文件等所有必需资源均发布在以下位置：
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/toolBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/ColorPrimary"
android:elevation="4dp"
app:contentInsetEnd="0dp"
app:contentInsetStart="0dp">
</android.support.v7.widget.Toolbar>
acceptor.xml <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--Attribute android:id causes the force close-->
<include layout="@layout/tool_bar"
android:id="@+id/action_accept"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/tvAcceptorHeader2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:text="Below is the List of Donors you need!"
android:textColor="#8A0707"
android:textSize="20sp"
android:textStyle="bold" />
<View
android:id="@+id/sort_divider2"
android:layout_width="fill_parent"
android:layout_height="1dip"
android:layout_below="@+id/tvAcceptorHeader2"
android:background="#000000" />
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/sort_divider2"
android:layout_marginBottom="10sp"
android:layout_marginTop="10dp"
android:cacheColorHint="#00000000"
android:dividerHeight="3dp"></ListView>
<RelativeLayout
android:id="@android:id/empty"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/sort_divider2"
android:layout_margin="10sp">
<TextView
android:id="@+id/tvListEmpty"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="No Filters Applied. Please apply the filters below!"
android:textSize="20sp" />
</RelativeLayout>
</RelativeLayout>
<SlidingDrawer
android:id="@+id/slidingDrawer1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_gravity="center"
android:content="@+id/content"
android:handle="@+id/handle"
android:orientation="horizontal">
<Button
android:id="@+id/handle"
android:layout_width="100dp"
android:layout_height="100dp"
android:background="@drawable/handle_sliding_closed" />
<RelativeLayout
android:id="@+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10sp"
android:background="#FFFFFF"
android:gravity="center"
android:orientation="vertical">
<TextView
android:id="@+id/tvAcceptorHeader"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginLeft="5dp"
android:text="Please apply the filters below to show a list of Donors!"
android:textColor="#8A0707"
android:textSize="20sp"
android:textStyle="bold" />
<View
android:id="@+id/header_divider"
android:layout_width="match_parent"
android:layout_height="1dip"
android:layout_below="@+id/tvAcceptorHeader"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="1dp"
android:background="#000000" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_below="@+id/header_divider"
android:layout_margin="15dp"
android:orientation="vertical">
<Spinner
android:id="@+id/spinBGSort"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:entries="@array/bg_types_sort"
android:prompt="@string/bg_prompt"
android:spinnerMode="dialog" />
<AutoCompleteTextView
android:id="@+id/acCitySort"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:hint="Your City here"
android:singleLine="true"></AutoCompleteTextView>
<EditText
android:id="@+id/etZipcodeSort"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:hint="Your ZIP CODE here"
android:singleLine="true"></EditText>
<CheckBox
android:id="@+id/cbLocation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:enabled="true"
android:text="Use my Location" />
<Button
android:id="@+id/bFilter"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:layout_marginLeft="5dp"
android:background="@drawable/button_selector"
android:text="Filter" />
</LinearLayout>
<View
android:id="@+id/sort_divider"
android:layout_width="match_parent"
android:layout_height="2dip"
android:layout_marginLeft="0dp"
android:layout_marginRight="0dp"
android:background="#000000" />
</RelativeLayout>
</SlidingDrawer>
</RelativeLayout>
LogCat 01-04 21:04:26.348 22744-22744/com.developit.bloodgency E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.developit.bloodgency, PID: 22744
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.developit.bloodgency/com.developit.bloodgency.AcceptorActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2318)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2396)
at android.app.ActivityThread.access$800(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1293)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:149)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:817)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:633)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.developit.bloodgency.AcceptorActivity.onCreate(AcceptorActivity.java:107)
at android.app.Activity.performCreate(Activity.java:5411)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2396)
at android.app.ActivityThread.access$800(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1293)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:149)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:817)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:633)
at dalvik.system.NativeStart.main(Native Method)
01-04 21:15:00.718 24442-24442/com.developit.bloodgency E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.developit.bloodgency, PID: 24442
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.developit.bloodgency/com.developit.bloodgency.AcceptorActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2318)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2396)
at android.app.ActivityThread.access$800(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1293)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:149)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:817)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:633)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.developit.bloodgency.AcceptorActivity.onCreate(AcceptorActivity.java:107)
at android.app.Activity.performCreate(Activity.java:5411)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2396)
at android.app.ActivityThread.access$800(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1293)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:149)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:817)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:633)
at dalvik.system.NativeStart.main(Native Method)
Acceptor.java //package
//import statements
public class AcceptorActivity extends ActionBarActivity implements
OnItemSelectedListener, OnClickListener, OnCheckedChangeListener,
OnDrawerCloseListener, OnDrawerOpenListener {
private static final String DONOR_LIST_URL = "http://bloodgency.developitltd.com/donor_list.php";
// JSON IDS:
private static final String TAG_SUCCESS = "success";
private static final String TAG_DONORS = "donors";
private static final String TAG_DONOR_ID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_EMAIL = "email";
private static final String TAG_CONTACT = "contact_number";
private static final String TAG_BG = "blood_group";
private static final String TAG_COUNTRY = "country";
private static final String TAG_STATE = "state";
private static final String TAG_CITY = "city";
private static final String TAG_ZIP = "zip_code";
// php read comments script
private static final String TAG_AREA = "area";
Button handle;
SlidingDrawer sd;
TextView tvListEmpty, tvAcceptorHeader;
CheckBox cbLocation;
Button bFilter;
EditText etZipcodeSort;
AutoCompleteTextView acCitySort;
String blood_group_selected;
String zipCode, zipCode_location, city_location, cityName;
GPSTracker gps;
Spinner spinBGSort;
private ArrayAdapter<String> adapterSortCity;
// Progress Dialog
private ProgressDialog pDialog;
// it's important to note that the message is both in the parent branch of
// our JSON tree that displays a "Donor Available" or a "No Donor Available"
// message,
// and there is also a message for each individual post, listed under the
// "posts"
// category, that displays what the user typed as their message.
// An array of all of our comments
private JSONArray mDonors = null;
// manages all of our comments in a list.
private ArrayList<HashMap<String, String>> mDonorList;
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.acceptor_screen);
Toolbar actionBar = (Toolbar) findViewById(R.id.toolBar);
//Line 107
actionBar.setTitle("Get Blood Donors");
actionBar.setLogo(R.drawable.ic_launcher);
setSupportActionBar(actionBar);
spinBGSort = (Spinner) findViewById(R.id.spinBGSort);
spinBGSort.setOnItemSelectedListener(this);
bFilter = (Button) findViewById(R.id.bFilter);
bFilter.setOnClickListener(this);
cbLocation = (CheckBox) findViewById(R.id.cbLocation);
cbLocation.setOnCheckedChangeListener(this);
etZipcodeSort = (EditText) findViewById(R.id.etZipcodeSort);
acCitySort = (AutoCompleteTextView) findViewById(R.id.acCitySort);
tvListEmpty = (TextView) findViewById(R.id.tvListEmpty);
tvAcceptorHeader = (TextView) findViewById(R.id.tvAcceptorHeader);
handle = (Button) findViewById(R.id.handle);
sd = (SlidingDrawer) findViewById(R.id.slidingDrawer1);
sd.open();
handle.setBackgroundResource(R.drawable.handle_sliding_open);
sd.setOnDrawerCloseListener(this);
sd.setOnDrawerOpenListener(this);
String[] city_list_india = getResources().getStringArray(R.array.indian_cities);
adapterSortCity = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, city_list_india);
acCitySort.setAdapter(adapterSortCity);
acCitySort.setThreshold(0);
// create class object
gps = new GPSTracker(AcceptorActivity.this);
// check if GPS enabled
if (gps.canGetLocation()) {
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
// \n is for new line
/*
* Toast.makeText( getApplicationContext(),
* "Your Location is - \nLat: " + latitude + "\nLong: " + longitude,
* Toast.LENGTH_LONG).show();
*/
// lat,lng, your current location
try {
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
List<Address> addresses = geocoder.getFromLocation(latitude,
longitude, 1);
zipCode_location = addresses.get(0).getPostalCode();
city_location = addresses.get(0).getLocality();
} catch (IOException e) { // TODO Auto-generated catch block
e.printStackTrace();
}
} else {
cbLocation.setEnabled(false);
// can't get location
// GPS or Network is not enabled
// Ask user to enable GPS/network in settings
}
if (cbLocation.isChecked()) {
if (!gps.canGetLocation())
gps.showSettingsAlert();
}
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
/*
* new LoadDonorList().execute("ALL Blood Groups", zipCode_location,
* city_location);
*/
}
/**
* ... /** Retrieves recent post data from the server.
*/
public void updateJSONdata(String bg, String zipCode, String cityName) {
// Instantiate the arraylist to contain all the JSON data.
// we are going to use a bunch of key-value pairs, referring
// to the json element name, and the content, for example,
// message it the tag, and "I'm awesome" as the content..
mDonorList = new ArrayList<HashMap<String, String>>();
// Bro, it's time to power up the J parser
JSONParser jParser = new JSONParser();
// Feed the beast our comments url, and it spits us
// back a JSON object. Boo-yeah Jerome.
JSONObject json = jParser.getJSONFromUrl(DONOR_LIST_URL);
// when parsing JSON stuff, we should probably
// try to catch any exceptions:
try {
mDonors = json.getJSONArray(TAG_DONORS);
// looping through all posts according to the json object returned
for (int i = 0; i < mDonors.length(); i++) {
JSONObject c = mDonors.getJSONObject(i);
// gets the content of each tag
String name = c.getString(TAG_NAME);
String email = c.getString(TAG_EMAIL);
String contact_number = c.getString(TAG_CONTACT);
String blood_group = c.getString(TAG_BG);
String country = c.getString(TAG_COUNTRY);
String state = c.getString(TAG_STATE);
String city = c.getString(TAG_CITY);
String zip_code = c.getString(TAG_ZIP);
String area = c.getString(TAG_AREA);
if (bg.equals(null) || blood_group.equals(bg)
|| bg.equals("ALL Blood Groups")) {
if (zip_code.equals(zipCode) || zipCode.equals("")) {
if (city.equalsIgnoreCase(cityName)
|| cityName.equals("")) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_NAME, name);
map.put(TAG_EMAIL, email);
map.put(TAG_CONTACT, contact_number);
map.put(TAG_BG, blood_group);
map.put(TAG_COUNTRY, country);
map.put(TAG_STATE, state);
map.put(TAG_CITY, city);
map.put(TAG_ZIP, zip_code);
map.put(TAG_AREA, area);
// adding HashList to ArrayList
mDonorList.add(map);
// annndddd, our JSON data is up to date same with
// our
// array
// list
}
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
/**
* Inserts the parsed data into the listview.
*/
private void updateList() {
// For a ListActivity we need to set the List Adapter, and in order to
// do
// that, we need to create a ListAdapter. This SimpleAdapter,
// will utilize our updated Hashmapped ArrayList,
// use our single_post xml template for each item in our list,
// and place the appropriate info from the list to the
// correct GUI id. Order is important here.
ListAdapter adapter = new SimpleAdapter(this, mDonorList,
R.layout.list_item, new String[]{TAG_NAME, TAG_EMAIL, TAG_BG,
TAG_CONTACT, TAG_COUNTRY, TAG_STATE, TAG_CITY, TAG_ZIP,
TAG_AREA}, new int[]{R.id.tvListName,
R.id.tvListEmail, R.id.tvListBG, R.id.tvListContact,
R.id.tvListCountry, R.id.tvListState, R.id.tvListCity,
R.id.tvListZipCode, R.id.tvListArea});
// Optional: when the user clicks a list item we
// could do something. However, we will choose
// to do nothing...
ListView lv = (ListView) findViewById(android.R.id.list);
lv.setAdapter(adapter);
lv.setBackgroundColor(Color.WHITE);
lv.setCacheColorHint(Color.WHITE);
if (lv.getAdapter().getCount() == 0) {
lv.setEmptyView(findViewById(android.R.id.empty));
tvListEmpty
.setText("No Donors to display with this Filter. Please apply another filter!");
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// This method is triggered if an item is click within our
// list. For our example we won't be using this, but
// it is useful to know in real life applications.
}
});
}
}
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.bFilter:
try {
findViewById(android.R.id.empty).setVisibility(View.INVISIBLE);
blood_group_selected = spinBGSort.getSelectedItem().toString();
String zipCode = etZipcodeSort.getText().toString();
String cityName = acCitySort.getText().toString();
if (!cbLocation.isChecked()) {
if (zipCode.equals("") && cityName.equals("")) {
Toast.makeText(this,
"Please enter atleast one of CITY or ZIP CODE",
Toast.LENGTH_LONG).show();
} else
new LoadDonorList().execute(blood_group_selected,
zipCode, cityName);
} else {
zipCode = zipCode_location;
cityName = city_location;
new LoadDonorList().execute(blood_group_selected, zipCode,
cityName);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
Toast.makeText(this,
"An error Occurred while fetching the Donor List",
Toast.LENGTH_LONG);
}
break;
}
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if (cbLocation.isChecked()) {
etZipcodeSort.setVisibility(View.INVISIBLE);
acCitySort.setVisibility(View.INVISIBLE);
} else {
etZipcodeSort.setVisibility(View.VISIBLE);
acCitySort.setVisibility(View.VISIBLE);
}
}
@Override
public void onDrawerOpened() {
// TODO Auto-generated method stub
handle.setBackgroundResource(R.drawable.handle_sliding_open);
}
@Override
public void onDrawerClosed() {
// TODO Auto-generated method stub
handle.setBackgroundResource(R.drawable.handle_sliding_closed);
}
public class LoadDonorList extends AsyncTask<String, Void, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(AcceptorActivity.this);
pDialog.setTitle("Loading Donor List");
pDialog.setMessage("Please Wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected String doInBackground(String... arg0) {
// we will develop this method in version 2
updateJSONdata(arg0[0], arg0[1], arg0[2]);
return null;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
pDialog.dismiss();
updateList();
sd.close();
}
}
}
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我希望这足以解决我的问题。 提前谢谢！