同时采用gestureImageView和Android版的ViewGroup运行时异常 [英] Android run time exception while using gestureImageView and ViewGroup
问题描述
您好,我是新来的Android应用程序。我想缩放效果添加到我的形象。我从[https://github.com/jasonpolites/gesture-imageview][1]和复制样本code样本教程从那里。但是,当我试图运行Eclipse的Java code,将引发异常。
codeS在这里连接。
ViewIndia.java
公共类ViewIndia延伸活动{ @覆盖
保护无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_view_india); 的LayoutParams PARAMS =新的LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT); GestureImageView视图=新GestureImageView(本);
view.setImageResource(R.drawable.india);
view.setLayoutParams(PARAMS); ViewGroup中LOUT =(ViewGroup中)findViewById(R.id.gestureImageView); lout.addView(视图);
} @覆盖
公共布尔onCreateOptionsMenu(菜单菜单){
//充气菜单;如果是present这增加了项目操作栏。
。getMenuInflater()膨胀(R.menu.view_india,菜单);
返回true;
}}
activity_view_india.xml
< RelativeLayout的
的xmlns:机器人=http://schemas.android.com/apk/res/android
的xmlns:手势图像=http://schemas.polites.com/android
的xmlns:工具=http://schemas.android.com/tools
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:方向=垂直
机器人:paddingBottom会=@扪/ activity_vertical_margin
机器人:paddingLeft =@扪/ activity_horizontal_margin
机器人:paddingRight =@扪/ activity_horizontal_margin
机器人:paddingTop =@扪/ activity_vertical_margin
工具:上下文=ViewIndia。>
< com.polites.android.GestureImageView
机器人:ID =@ + ID / gestureImageView
机器人:layout_width =FILL_PARENT
机器人:layout_height =WRAP_CONTENT
机器人:SRC =@绘制/印度
手势的图像:分规模=0.1
手势的图像:最大规模=10.0
手势的形象:严格=真/>
和日志文件
1月8日至5日:41:53.671:E / AndroidRuntime(1001):致命异常:主要
一月八日至5日:41:53.671:E / AndroidRuntime(1001):了java.lang.RuntimeException:无法启动活动ComponentInfo {com.example.viewindia / com.example.viewindia.ViewIndia}:java.lang.ClassCastException:COM .polites.android.GestureImageView不能转换为android.view.ViewGroup
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.app.ActivityThread.access $ 600(ActivityThread.java:141)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1256)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.os.Handler.dispatchMessage(Handler.java:99)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.os.Looper.loop(Looper.java:137)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.app.ActivityThread.main(ActivityThread.java:5103)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在java.lang.reflect.Method.invokeNative(本机方法)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在java.lang.reflect.Method.invoke(Method.java:525)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:737)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在dalvik.system.NativeStart.main(本机方法)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):java.lang.ClassCastException:致com.polites.android.GestureImageView不能转换为android.view.ViewGroup
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在com.example.viewindia.ViewIndia.onCreate(ViewIndia.java:25)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.app.Activity.performCreate(Activity.java:5133)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
一月八日至5日:41:53.671:E / AndroidRuntime(1001):11 ...更多
请帮我从错误骑走了。
的ViewGroup LOUT =(ViewGroup中)findViewById(R.id.gestureImageView);
您gestureImageView不是一个ViewGroup中。哪个阶级它与延伸?难道有何看法?如果是的话,用
查看LOUT =(查看)findViewById(R.id.gestureImageView);
Hi i am new to Android application. I want to add zooming effect to my image. I took a sample tutorial from [https://github.com/jasonpolites/gesture-imageview][1] and copied sample code from there. But when I was tried to run the java code in eclipse, an exception is raised. Codes are attached here.
ViewIndia.java
public class ViewIndia extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_india);
LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
GestureImageView view = new GestureImageView(this);
view.setImageResource(R.drawable.india);
view.setLayoutParams(params);
ViewGroup lout = (ViewGroup) findViewById(R.id.gestureImageView);
lout.addView(view);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.view_india, menu);
return true;
}
}
activity_view_india.xml
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:gesture-image="http://schemas.polites.com/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".ViewIndia" >
<com.polites.android.GestureImageView
android:id="@+id/gestureImageView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="@drawable/india"
gesture-image:min-scale="0.1"
gesture-image:max-scale="10.0"
gesture-image:strict="true"/>
and the log file
08-05 01:41:53.671: E/AndroidRuntime(1001): FATAL EXCEPTION: main
08-05 01:41:53.671: E/AndroidRuntime(1001): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.viewindia/com.example.viewindia.ViewIndia}: java.lang.ClassCastException: com.polites.android.GestureImageView cannot be cast to android.view.ViewGroup
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.app.ActivityThread.access$600(ActivityThread.java:141)
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.os.Handler.dispatchMessage(Handler.java:99)
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.os.Looper.loop(Looper.java:137)
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.app.ActivityThread.main(ActivityThread.java:5103)
08-05 01:41:53.671: E/AndroidRuntime(1001): at java.lang.reflect.Method.invokeNative(Native Method)
08-05 01:41:53.671: E/AndroidRuntime(1001): at java.lang.reflect.Method.invoke(Method.java:525)
08-05 01:41:53.671: E/AndroidRuntime(1001): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
08-05 01:41:53.671: E/AndroidRuntime(1001): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
08-05 01:41:53.671: E/AndroidRuntime(1001): at dalvik.system.NativeStart.main(Native Method)
08-05 01:41:53.671: E/AndroidRuntime(1001): Caused by: java.lang.ClassCastException: com.polites.android.GestureImageView cannot be cast to android.view.ViewGroup
08-05 01:41:53.671: E/AndroidRuntime(1001): at com.example.viewindia.ViewIndia.onCreate(ViewIndia.java:25)
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.app.Activity.performCreate(Activity.java:5133)
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
08-05 01:41:53.671: E/AndroidRuntime(1001): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
08-05 01:41:53.671: E/AndroidRuntime(1001): ... 11 more
Please help me to ride off from the error.
ViewGroup lout = (ViewGroup) findViewById(R.id.gestureImageView);
Your gestureImageView is not a ViewGroup. Which Class does it extend from? Is it View? if yes, use
View lout = (View) findViewById(R.id.gestureImageView);
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