我知道你以前會看到這個問題。我知道我有:-)。但是,仍然,梳理我發現的所有答案,我仍然得到膨脹的類錯誤。我的佈局有一個擴展的webView,因爲我希望能夠左右滑動以加載前一個和下一個html頁面。 我包含了整個佈局,因爲我發現大部分答案都是以抽象的方式處理webView,而不是作爲大圖的一部分。希望這個答案能夠幫助他人獲得更大的圖片。Android:錯誤充氣擴展類
底部的scrollview會包含按鈕作爲瀏覽html頁面的替代方法。該視圖imageView2將包含一個透明的頭部分遮蔽了底層的webView。 textView helloText將顯示章節標題。直到我不得不擴展webView才能處理左右滑動,我完成了所有這些工作。
這裏的佈局XML:
<LinearLayout 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"
android:orientation="vertical"
tools:context=".MainActivity" >
<RelativeLayout
android:id="@+id/relativeLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.8"
android:orientation="vertical" >
<com.example.test.MyWebView
android:id="@+id/webView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" />
<View
android:id="@+id/imageView2"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:background="#88FF0000"/>
</RelativeLayout>
<TextView
android:id="@+id/helloText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.05"
android:gravity="center_horizontal"
android:text="Hello World" />
<HorizontalScrollView
android:id="@+id/horizontalScrollView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.15"
android:background="#0000FF" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<Button
android:id="@+id/button1"
android:layout_width="110dp"
android:layout_height="45dp"
android:background="#00FF00" />
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
,這是代碼:
package com.example.test;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.GestureDetector;
import android.view.Menu;
import android.view.MotionEvent;
import android.webkit.WebView;
import android.widget.Toast;
public class MainActivity extends Activity {
int currentPage = 2; // page number for current html file
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//get a pointer to the webview
MyWebView webview = (MyWebView) findViewById(R.id.webView1);
webview.getSettings().setUseWideViewPort(true);
webview.getSettings().setSupportZoom(true);
webview.getSettings().setBuiltInZoomControls(true);
// put html page in the webView
webview.loadUrl("file:///android_asset/chapter" + currentPage + ".html");
}
public void changePage(int page) {
Log.v("test", "change page to " + page);
//get a pointer to the webview
MyWebView webview = (MyWebView)findViewById(R.id.webView1);
// put html page in the webView
webview.loadUrl("file:///android_asset/chapter" + page + ".html");
}
class MyWebView extends WebView {
Context context;
GestureDetector gd;
public MyWebView(Context context, AttributeSet attrs) {
super(context, attrs);
this.context = context;
gd = new GestureDetector(context, sogl);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return (gd.onTouchEvent(event)
|| super.onTouchEvent(event));
}
GestureDetector.SimpleOnGestureListener sogl = new GestureDetector.SimpleOnGestureListener() {
public boolean onDown(MotionEvent event) {
return false;
}
public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX, float velocityY) {
if (event1.getRawX() > event2.getRawX() && StrictMath.abs(event1.getRawY()-event2.getRawY())<100) {
show_toast("swipe left");
currentPage += 1;
if (currentPage >= 19) currentPage = 19;
changePage(currentPage);
} else if(event1.getRawX() < event2.getRawX() && StrictMath.abs(event1.getRawY()-event2.getRawY())<100){
show_toast("swipe right");
currentPage -= 1;
if (currentPage <= 1) currentPage = 1;
changePage(currentPage);
} else {
return false;
}
return true;
}
};
void show_toast(final String text) {
Toast t = Toast.makeText(context, text, Toast.LENGTH_SHORT);
t.show();
}
}
}
實際的錯誤讀取:
了java.lang.RuntimeException:無法啓動活動ComponentInfo { com.example.test/com.example.test.MainActivity}:android.view.InflateException:二進制XML文件行#15:錯誤膨脹類com.example.test.MyWebView
在此先感謝您的幫助。非常感激。
夾具先生
按照要求完整的錯誤跟蹤:
01-23 10:21:51.980: E/AndroidRuntime(29514): FATAL EXCEPTION: main
01-23 10:21:51.980: E/AndroidRuntime(29514): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.test/com.example.test.MainActivity}: android.view.InflateException: Binary XML file line #15: Error inflating class com.example.test.MyWebView
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.app.ActivityThread.access$600(ActivityThread.java:140)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.os.Handler.dispatchMessage(Handler.java:99)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.os.Looper.loop(Looper.java:137)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.app.ActivityThread.main(ActivityThread.java:4898)
01-23 10:21:51.980: E/AndroidRuntime(29514): at java.lang.reflect.Method.invokeNative(Native Method)
01-23 10:21:51.980: E/AndroidRuntime(29514): at java.lang.reflect.Method.invoke(Method.java:511)
01-23 10:21:51.980: E/AndroidRuntime(29514): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
01-23 10:21:51.980: E/AndroidRuntime(29514): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
01-23 10:21:51.980: E/AndroidRuntime(29514): at dalvik.system.NativeStart.main(Native Method)
01-23 10:21:51.980: E/AndroidRuntime(29514): Caused by: android.view.InflateException: Binary XML file line #15: Error inflating class com.example.test.MyWebView
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
01-23 10:21:51.980: E/AndroidRuntime(29514): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:308)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.app.Activity.setContentView(Activity.java:1924)
01-23 10:21:51.980: E/AndroidRuntime(29514): at com.example.test.MainActivity.onCreate(MainActivity.java:21)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.app.Activity.performCreate(Activity.java:5206)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)
01-23 10:21:51.980: E/AndroidRuntime(29514): ... 11 more
01-23 10:21:51.980: E/AndroidRuntime(29514): Caused by: java.lang.ClassNotFoundException: com.example.test.MyWebView
01-23 10:21:51.980: E/AndroidRuntime(29514): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
01-23 10:21:51.980: E/AndroidRuntime(29514): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
01-23 10:21:51.980: E/AndroidRuntime(29514): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.view.LayoutInflater.createView(LayoutInflater.java:552)
01-23 10:21:51.980: E/AndroidRuntime(29514): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
01-23 10:21:51.980: E/AndroidRuntime(29514): ... 22 more
後所有異常跟蹤,並MyWebView代碼和佈局 – Dimmerg
添加這個'公共MyWebView(上下文的背景下){ 超(上下文); //這個構造函數用於以編程方式創建視圖 }構造函數也試過,你可以移動自定義web視圖來分離.java文件 – Raghunandan
@ Dimmerg:包含所有跟蹤請求。 MyWebView代碼在發佈代碼部分中用以下代碼行開始:「class MyWebView extends WebView {」佈局部分從發佈的xml中的行開始:「