我已经问过了,但是没有人回答,所以我再问一遍。我正在尝试从android.support.v4.widget实现SlidingPaneLayout。我正在尝试实现最可能的准系统代码。任何事情都会加载的唯一方法是我注释掉setContentView()
。代码无法更简单,甚至不会在没有错误的情况下运行。任何帮助都将非常感激。
MainActivity.java:
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.widget.SlidingPaneLayout;
public class MainActivity extends Activity {
SlidingPaneLayout paneLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.root_layout);
/*
paneLayout = (SlidingPaneLayout) findViewById(R.id.root_layout);
paneLayout.setPanelSlideListener(new SlidingPaneLayout.SimplePanelSlideListener() {
@Override
public void onPanelSlide(View panel, float slideOffset) {
super.onPanelSlide(panel, slideOffset);
}
@Override
public void onPanelOpened(View panel) {
super.onPanelOpened(panel);
}
@Override
public void onPanelClosed(View panel) {
super.onPanelClosed(panel);
}
});
*/
}
}
主XML文件:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SlidingPaneLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--fragment structure follows-->
<fragment
android:id="@+id/content_pane_fragment"
android:name="com.sonfluence.app.ContentPane"
android:layout_width="match_parent"
android:layout_height="match_parent">
</fragment>
<fragment
android:id="@+id/menu_pane_fragment"
android:name="com.sonfluence.app.MenuPane"
android:layout_width="match_parent"
android:layout_height="match_parent">
</fragment>
</android.support.v4.widget.SlidingPaneLayout>
内容片段:
package com.sonfluence.app;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
* Created by c on 5/20/14.
*/
public class ContentPane extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.content_pane, container, false);
return v;
}
}
内容XML(我也尝试将其作为xml中的片段进行投射,没有):
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/content_pane">
</RelativeLayout>
Logcat:
05-20 17:30:29.312 20648-20648/com.sonfluence.app E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.sonfluence.app, PID: 20648
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sonfluence.app/com.sonfluence.app.MainActivity}: android.view.InflateException: Binary XML file line #10: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java)
at android.app.ActivityThread.access$800(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java)
at android.os.Handler.dispatchMessage(Handler.java)
at android.os.Looper.loop(Looper.java)
at android.app.ActivityThread.main(ActivityThread.java)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #10: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java)
at android.view.LayoutInflater.rInflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java)
at android.app.Activity.setContentView(Activity.java)
at com.sonfluence.app.MainActivity.onCreate(MainActivity.java:15)
at android.app.Activity.performCreate(Activity.java)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java)
at android.app.ActivityThread.access$800(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java)
at android.os.Handler.dispatchMessage(Handler.java)
at android.os.Looper.loop(Looper.java)
at android.app.ActivityThread.main(ActivityThread.java)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.app.Fragment$InstantiationException: Trying to instantiate a class com.sonfluence.app.ContentPane that is not a Fragment
at android.app.Fragment.instantiate(Fragment.java)
at android.app.Fragment.instantiate(Fragment.java)
at android.app.Activity.onCreateView(Activity.java)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java)
at android.view.LayoutInflater.rInflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java)
at android.app.Activity.setContentView(Activity.java)
at com.sonfluence.app.MainActivity.onCreate(MainActivity.java:15)
at android.app.Activity.performCreate(Activity.java)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java)
at android.app.ActivityThread.access$800(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java)
at android.os.Handler.dispatchMessage(Handler.java)
at android.os.Looper.loop(Looper.java)
at android.app.ActivityThread.main(ActivityThread.java)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassCastException
at android.app.Fragment.instantiate(Fragment.java)
at android.app.Fragment.instantiate(Fragment.java)
at android.app.Activity.onCreateView(Activity.java)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java)
at android.view.LayoutInflater.rInflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java)
at android.app.Activity.setContentView(Activity.java)
at com.sonfluence.app.MainActivity.onCreate(MainActivity.java:15)
at android.app.Activity.performCreate(Activity.java)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java)
at android.app.ActivityThread.access$800(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java)
at android.os.Handler.dispatchMessage(Handler.java)
at android.os.Looper.loop(Looper.java)
at android.app.ActivityThread.main(ActivityThread.java)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分:1)
如果您使用的是android.support.v4.app.Fragment
,则需要延长FragmentActivity - 它会为您ClassCastException
提供android.app.Fragment
,因为Activity
为{{1}} }不知道Fragments的支持版本。)