我正在尝试在自定义对话框内显示 webview，它在对话框外工作。下面是我的代码以及自定义对话框 xml 的 xml。请提供您的专业知识，谢谢。
public class TellaFriend extends Activity {
static final int CUSTOM_DIALOG_ID = 0;
TextView customDialog_TextView;
EditText customDialog_EditText;
Button customDialog_Update, customDialog_Dismiss;;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button buttonStartDialog = (Button) findViewById(R.id.button1);
buttonStartDialog.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
showDialog(CUSTOM_DIALOG_ID);
}
});
}
private Button.OnClickListener customDialog_UpdateOnClickListener = new Button.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String sharedFact = customDialog_EditText.getText().toString();
}
};
private Button.OnClickListener customDialog_DismissOnClickListener = new Button.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
dismissDialog(CUSTOM_DIALOG_ID);
}
};
@Override
protected Dialog onCreateDialog(int id) {
// TODO Auto-generated method stub
Dialog dialog = null;
switch (id) {
case CUSTOM_DIALOG_ID:
dialog = new Dialog(this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setCancelable(false);
dialog.setContentView(R.layout.customlayout);
WebView webView = (WebView) findViewById(R.id.webview);
webView.getSettings().setJavaScriptEnabled(true);
webView.setBackgroundColor(Color.BLACK);
webView.loadUrl("file:///android_asset/Help.html");
webView.setWebViewClient(new GameClient());
customDialog_Update = (Button) dialog.findViewById(R.id.submit);
customDialog_Dismiss = (Button) dialog.findViewById(R.id.buttonone);
customDialog_Update.setOnClickListener(customDialog_UpdateOnClickListener); customDialog_Dismiss.setOnClickListener(customDialog_DismissOnClickListener);
break;
}
return dialog;
}
public class GameClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
}
和xml
<?xml version="1.0" encoding="utf-8"?>
RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="290dp" android:background="#ffffff"
android:layout_height="350dp" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_margin="15dp"
android:orientation="vertical"
android:padding="2dp" >
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scrollbarSize="12dip"
android:scrollbarThumbVertical="@drawable/scrollbar_vertical_thumb"
android:scrollbarTrackVertical="@drawable/scrollbar_vertical_track" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<WebView android:id="@+id/webview" android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
<Button
android:id="@+id/backbtn" android:layout_marginTop="20dp"
android:layout_width="165dp"
android:layout_height="57dp"
android:layout_gravity="center_horizontal"
android:text="Call and Talk with a buyer now"
android:textColor="#000000"
android:textSize="13sp"
android:textStyle="bold" />
<Button
android:id="@+id/submit" android:layout_marginTop="20dp"
android:layout_width="165dp"
android:layout_height="57dp"
android:layout_gravity="center_horizontal"
android:text="Email Buyer now to confirm selling details"
android:textColor="#000000"
android:textSize="13sp"
android:textStyle="bold" />
</LinearLayout>
</ScrollView>
</RelativeLayout>
<RelativeLayout
android:layout_width="290dp" android:background="@drawable/abg"
android:layout_height="350dp" android:layout_margin="1dp">
<Button
android:id="@+id/buttonone"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_alignParentRight="true"
android:layout_margin="5dp"
android:background="@drawable/round_button_background"
android:gravity="center_vertical|center_horizontal"
android:onClick="cancelActivity"
android:text="X"
android:textColor="#ffffff"
android:textSize="13sp"
android:textStyle="bold" />
</RelativeLayout>
</RelativeLayout>
错误日志是
05-02 10:00:04.922: E/AndroidRuntime(488): FATAL EXCEPTION: main
05-02 10:00:04.922: E/AndroidRuntime(488): java.lang.NullPointerException
05-02 10:00:04.922: E/AndroidRuntime(488): at com.kk.TellaFriend.TellaFriend.onCreateDialog(TellaFriend.java:91)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.app.Activity.onCreateDialog(Activity.java:2472)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.app.Activity.createDialog(Activity.java:881)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.app.Activity.showDialog(Activity.java:2547)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.app.Activity.showDialog(Activity.java:2514)
05-02 10:00:04.922: E/AndroidRuntime(488): at com.kk.TellaFriend.TellaFriend$3.onClick(TellaFriend.java:45)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.view.View.performClick(View.java:2408)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.view.View$PerformClick.run(View.java:8816)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.os.Handler.handleCallback(Handler.java:587)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.os.Handler.dispatchMessage(Handler.java:92)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.os.Looper.loop(Looper.java:123)
05-02 10:00:04.922: E/AndroidRuntime(488): at android.app.ActivityThread.main(ActivityThread.java:4627)
05-02 10:00:04.922: E/AndroidRuntime(488): at java.lang.reflect.Method.invokeNative(Native Method)
05-02 10:00:04.922: E/AndroidRuntime(488): at java.lang.reflect.Method.invoke(Method.java:521)
05-02 10:00:04.922: E/AndroidRuntime(488): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
05-02 10:00:04.922: E/AndroidRuntime(488): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
05-02 10:00:04.922: E/AndroidRuntime(488): at dalvik.system.NativeStart.main(Native Method)
最佳答案
您将需要为对话框调用 findViewById。
WebView webView = (WebView) dialog.findViewById(R.id.webview);
关于android - 如何在 android 的自定义对话框中显示 webview？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10407831/