我的应用程序崩溃，无法找出问题所在。请看下面的代码。
Country_Select.java：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_country_select);
}
private static final String TAG = "BOBLogs";
public static final String PREFS_NAME = "PrefsFile";
//
// Button ke_button = (Button) findViewById(R.id.btn_ke);
// Button za_button = (Button) findViewById(R.id.btn_za);
public void loadZA(View view){
Context context = getApplicationContext();
Log.i(TAG, "Started loadZA");
Intent intent = new Intent(this, TnCActivity.class);
SharedPreferences prefs = getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
editor.putString("Country_Selected", "ZA");
editor.commit();
startActivity(intent);
String channel = (prefs.getString("Country_Selected", ""));
CharSequence test = channel;
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, test, duration);
toast.show();
}
public void loadKE(View view){
Context context = getApplicationContext();
Intent intent = new Intent(this, TnCActivity.class);
SharedPreferences prefs = getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
editor.putString("Country_Selected", "KE");
editor.commit();
String channel = (prefs.getString("Country_Selected", ""));
CharSequence test = channel;
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, test, duration);
toast.show();
startActivity(intent);
Log.i(TAG, "Started intent");
}
以上活动基本上允许用户选择所选国家。根据他们的选择，将加载特定的条款和条件。基于SharedPreferences“Country_Selected”数据。
TnC活动：
private static final String TAG = "BOBLogs";
public static final String PREFS_NAME = "PrefsFile";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tnc);
final EditText edittext;
final Button tncButtonZa;
final Button tncButtonKe;
edittext = (EditText) findViewById(R.id.txt_TnCs_heading);
tncButtonZa = (Button) findViewById(R.id.btn_za);
tncButtonKe = (Button) findViewById(R.id.btn_ke);
SharedPreferences prefs = getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
String channel = (prefs.getString("Country_Selected", ""));
CharSequence test = channel;
try {
if (channel.equals("ZA")) {
WebView webview = (WebView) findViewById(R.id.wv_tnc_html);
setContentView(webview);
webview.loadUrl("file:///android_asset/terms_conditions_sa.html");
} else {
// WebView webview = new WebView(this);
WebView webview = (WebView) findViewById(R.id.wv_tnc_html);
setContentView(webview);
webview.loadUrl("file:///android_asset/terms_conditions_ke.html");
}
}catch (InflateException e) {
}
我不确定崩溃发生在哪里或为什么但是这里是logcat的一部分？
04-24 08:04:27.198 22058-22058/app.MyApplication.com.MyApplication E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: app.MyApplication.com.MyApplication, PID: 22058
java.lang.RuntimeException: Unable to start activity ComponentInfo{app.MyApplication.com.MyApplication/app.MyApplication.com.MyApplication.TnCActivity}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
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:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
at android.view.ViewGroup.addViewInner(ViewGroup.java:3562)
at android.view.ViewGroup.addView(ViewGroup.java:3415)
at android.view.ViewGroup.addView(ViewGroup.java:3360)
at android.view.ViewGroup.addView(ViewGroup.java:3336)
at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:231)
at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:107)
at app.MyApplication.com.MyApplication.TnCActivity.onCreate(TnCActivity.java:40)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
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:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
谢谢
答案 0 :(得分：2)
IllegalStateException：指定的子级已有父级。您必须首先在孩子的父母身上调用removeView（）。
您正在呼叫setContentView()三次。
您的setContentView(webview);错了。