（按钮是我要点击并移动到DrinksActivity）
public void calculate(View view){
startActivity(new Intent(MainActivity.this, DrinksActivity.class));
}
MainActivity的按钮xml：
<Button
android:id="@+id/genderbutton"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_below="@+id/radioGroup1"
android:layout_centerHorizontal="true"
android:layout_marginTop="77dp"
android:onClick="calculate"
android:text="@string/next2"
android:textColor="#FFFFFF" />
清单中的DrinksActivity：
<activity
android:name="com.example.bac.DrinksActivity"
android:label="@string/title_activity_drinks" >
</activity>
DrinksActivity.java目前只是基本的。没有任何改变。
该应用程序将运行完美，但是当我点击该按钮时，我收到一个运行时错误，该错误会停止该应用程序并且不会转移到DrinksActivity。
Logcat文件：
09-22 02:16:32.677: E/AndroidRuntime(615): FATAL EXCEPTION: main
09-22 02:16:32.677: E/AndroidRuntime(615): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.bac/com.example.bac.DrinksActivity}: java.lang.IllegalArgumentException: No view found for id 0x7f05003c (com.example.bac:id/container) for fragment PlaceholderFragment{4190fdc0 #0 id=0x7f05003c}
09-22 02:16:32.677: E/AndroidRuntime(615): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.app.ActivityThread.access$600(ActivityThread.java:130)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.os.Handler.dispatchMessage(Handler.java:99)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.os.Looper.loop(Looper.java:137)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.app.ActivityThread.main(ActivityThread.java:4745)
09-22 02:16:32.677: E/AndroidRuntime(615): at java.lang.reflect.Method.invokeNative(Native Method)
09-22 02:16:32.677: E/AndroidRuntime(615): at java.lang.reflect.Method.invoke(Method.java:511)
09-22 02:16:32.677: E/AndroidRuntime(615): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
09-22 02:16:32.677: E/AndroidRuntime(615): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-22 02:16:32.677: E/AndroidRuntime(615): at dalvik.system.NativeStart.main(Native Method)
09-22 02:16:32.677: E/AndroidRuntime(615): Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f05003c (com.example.bac:id/container) for fragment PlaceholderFragment{4190fdc0 #0 id=0x7f05003c}
09-22 02:16:32.677: E/AndroidRuntime(615): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:930)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1478)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:570)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1163)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.app.Activity.performStart(Activity.java:5018)
09-22 02:16:32.677: E/AndroidRuntime(615): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2032)
09-22 02:16:32.677: E/AndroidRuntime(615): ... 11 more
09-22 02:16:34.947: I/Process(615): Sending signal. PID: 615 SIG: 9
我还有另外一个问题，你可以帮助我（与这个问题无关）你如何做到这一点，以便应用程序可以通过触摸向下滚动并具有更长的活动？
DrinksActivity类：
package com.example.bac;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
public class DrinksActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.drinks);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.drinks, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.drinks, container, false);
return rootView;
}
}
}
主要活动中的占位符片段：
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
drinks.xml：
<RelativeLayout 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:background="@drawable/bg"
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="com.example.bac.DrinksActivity$PlaceholderFragment" >
<TextView
android:id="@+id/hmd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="@string/hmd"
android:textColor="#FFFFFF"
android:textSize="25sp" />
<TextView
android:id="@+id/dyh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/hmd"
android:layout_centerHorizontal="true"
android:text="@string/dyh"
android:textColor="#FFFFFF"
android:textSize="25sp" />
<TextView
android:id="@+id/shot"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/wine"
android:layout_below="@+id/wine"
android:layout_marginTop="41dp"
android:text="@string/shots"
android:textColor="#FFFFFF"
android:textSize="20sp" />
<TextView
android:id="@+id/wine"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/beer"
android:layout_below="@+id/beer"
android:layout_marginTop="45dp"
android:text="@string/wine"
android:textColor="#FFFFFF"
android:textSize="20sp" />
<EditText
android:id="@+id/shotinput"
android:layout_width="75dp"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/shot"
android:layout_alignBottom="@+id/shot"
android:layout_alignLeft="@+id/wineinput"
android:ems="10"
android:hint="#"
android:inputType="number"
android:textColor="#FFFFFF"
android:textColorLink="#FFFFFF"
android:textSize="15sp" />
<Button
android:id="@+id/drinksbutton"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="62dp"
android:onClick="next"
android:text="@string/next1"
android:textColor="#FFFFFF" />
<TextView
android:id="@+id/beer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/hmd"
android:layout_below="@+id/dyh"
android:layout_marginTop="64dp"
android:text="@string/beer"
android:textColor="#FFFFFF"
android:textSize="20sp" />
<EditText
android:id="@+id/beerinput"
android:layout_width="75dp"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/beer"
android:layout_alignBottom="@+id/beer"
android:layout_toRightOf="@+id/shot"
android:ems="10"
android:hint="#"
android:inputType="number"
android:textColor="#FFFFFF"
android:textColorLink="#FFFFFF"
android:textSize="15sp" />
<EditText
android:id="@+id/wineinput"
android:layout_width="75dp"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/wine"
android:layout_alignBottom="@+id/wine"
android:layout_alignLeft="@+id/beerinput"
android:ems="10"
android:hint="#"
android:inputType="number"
android:textColor="#FFFFFF"
android:textColorLink="#FFFFFF"
android:textSize="15sp" />
</RelativeLayout>
答案 0 :(得分：1)
你的问题来自这两行
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
每个片段都需要一个＆＃34;容器＆＃34;活动用来托管Fragment本身。此容器通常是框架（ViewGroup）提供的FrameLayout的实现之一。您的代码所说的是您已在R.id.container内声明了一个ID为R.layout.drinks的视图，但在例外情况下并非如此