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我在OnCreate方法上調用以下方法setupAdapter（）;無法在列表視圖中添加標題Android
private void setupAdapter() {
// set the list adapter
JSONArray returnArray = null;
try {
returnArray = getQuickViewContents();
} catch (JSONException e) {
e.printStackTrace();
}
JSONObject obj0 = null;
if (returnArray != null) {
try {
obj0 = returnArray.getJSONObject(0);
} catch (JSONException e) {
e.printStackTrace();
}
}
try {
getCreditCardDetails();
} catch (JSONException e3) {
e3.printStackTrace();
}
JSONArray productArray = null;
try {
productArray = obj0.getJSONArray("Content");
} catch (JSONException e2) {
e2.printStackTrace();
}
ArrayList<HashMap<String, String>> productList = new ArrayList<HashMap<String, String>>();
if (productArray != null) {
ListView lv = (ListView) findViewById(android.R.id.list);
for (int i = 0; i < productArray.length(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap
try {
map.put(KEY_BRAND,
productArray.getJSONObject(i).getString("Brand"));
map.put(KEY_QUANTITY_NAME, productArray.getJSONObject(i)
.getString("Quantity")
+ " X "
+ productArray.getJSONObject(i).getString("Name"));
map.put(KEY_PRICE, Currency.britishPound
+ productArray.getJSONObject(i)
.getString("MinCost"));
} catch (JSONException e) {
e.printStackTrace();
}
// adding HashList to ArrayList
productList.add(map);
adapter = new APIQuickCheckoutProductProvider(APIQuickCheckout.this, productList);
lv.addHeaderView(headerMethod());
lv.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
}
}
private View headerMethod() {
View header = getLayoutInflater().inflate(R.layout.api_quick_checkout_header, null);
card_cvv = (EditText) header.findViewById(R.id.api_quick_checkout_card_cvv);
Button edit_payment_details = (Button) header.findViewById(R.id.edit_button_payment);
edit_payment_details.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
final Intent i = new Intent(APIQuickCheckout.this,APIPaymentDetails.class);
startActivity(i);
}
});
// set the payment info layout
TextView card_number = (TextView) header.findViewById(R.id.api_quick_checkout_card_number);
TextView card_expiry = (TextView) header.findViewById(R.id.api_quick_checkout_card_expiry);
try {
card_number.setText(CheckoutManager.getInstance().getSelectedPaymentCard().getString("cardNumber"));
card_expiry.setText(CheckoutManager.getInstance().getSelectedPaymentCard().getString("expDate"));
} catch (Exception e1) {
e1.printStackTrace();
}
return header;
}
而且堆棧跟蹤
12-24 17:31:17.805: E/AndroidRuntime(31051): FATAL EXCEPTION: main
12-24 17:31:17.805: E/AndroidRuntime(31051): java.lang.RuntimeException: Unable to start activity ComponentInfo{apicheckout.APIQuickCheckout}: java.lang.IllegalStateException: Cannot add header view to list -- setAdapter has already been called.
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.os.Handler.dispatchMessage(Handler.java:99)
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.os.Looper.loop(Looper.java:130)
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.app.ActivityThread.main(ActivityThread.java:3683)
12-24 17:31:17.805: E/AndroidRuntime(31051): at java.lang.reflect.Method.invokeNative(Native Method)
12-24 17:31:17.805: E/AndroidRuntime(31051): at java.lang.reflect.Method.invoke(Method.java:507)
12-24 17:31:17.805: E/AndroidRuntime(31051): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-24 17:31:17.805: E/AndroidRuntime(31051): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-24 17:31:17.805: E/AndroidRuntime(31051): at dalvik.system.NativeStart.main(Native Method)
12-24 17:31:17.805: E/AndroidRuntime(31051): Caused by: java.lang.IllegalStateException: Cannot add header view to list -- setAdapter has already been called.
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.widget.ListView.addHeaderView(ListView.java:279)
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.widget.ListView.addHeaderView(ListView.java:302)
12-24 17:31:17.805: E/AndroidRuntime(31051): at apicheckout.APIQuickCheckout.setupAdapter(APIQuickCheckout.java:192)
12-24 17:31:17.805: E/AndroidRuntime(31051): at apicheckout.APIQuickCheckout.onCreate(APIQuickCheckout.java:121)
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-24 17:31:17.805: E/AndroidRuntime(31051): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
12-24 17:31:17.805: E/AndroidRuntime(31051): ... 11 more
所有我想要做的是增加作爲報頭中的headerMethod的內容。我究竟做錯了什麼？
你在循環中使用setAdapter，得到它的循環。 – Talha