Java 接收来自缺少ListView（尽管有xml）的RuntimeException

你好，我在我的Android项目中，我得到以下错误。我已经检查了几乎所有类似的问题，我试图在这里使用一些解决方案

但它们似乎不适用

FATAL EXCEPTION: main
Process: com.spicycurryman.getdisciplined10.app, PID: 1309
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.spicycurryman.getdisciplined10.app/com.spicycurryman.getdisciplined10.app.MainActivity}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
at android.app.ListActivity.onContentChanged(ListActivity.java:243)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:293)
at android.app.Activity.setContentView(Activity.java:1929)
at com.spicycurryman.getdisciplined10.app.MainActivity.onCreate(MainActivity.java:32)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)

位于android.os.Looper.loop（Looper.java:136） 位于android.app.ActivityThread.main（ActivityThread.java:5017） 位于java.lang.reflect.Method.Invokenactive（本机方法） 位于java.lang.reflect.Method.invoke（Method.java:515）

显然，我必须有一个id属性为“android.R.id.list”的ListView，我不确定在这种情况下在哪里实现它

以下是我的主要活动：

package com.spicycurryman.getdisciplined10.app;

import android.app.ListActivity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.SeekBar.OnSeekBarChangeListener;

import com.triggertrap.seekarc.SeekArc;
import com.triggertrap.seekarc.SeekArc.OnSeekArcChangeListener;

public class MainActivity extends ListActivity {
    private SeekArc mSeekArc;
    private SeekBar mRotation;
    private SeekBar mStartAngle;
    private SeekBar mSweepAngle;
    private SeekBar mArcWidth;
    private SeekBar mProgressWidth;
    private CheckBox mRoundedEdges;
    private CheckBox mTouchInside;
    private CheckBox mClockwise;
    private TextView mSeekArcProgress;




    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mSeekArc = (SeekArc) findViewById(R.id.seekArc);
        mSeekArcProgress = (TextView) findViewById(R.id.seekArcProgress);
        mRotation = (SeekBar) findViewById(R.id.rotation);
        mStartAngle = (SeekBar) findViewById(R.id.startAngle);
        mSweepAngle  = (SeekBar) findViewById(R.id.sweepAngle);
        mArcWidth = (SeekBar) findViewById(R.id.arcWidth);
        mProgressWidth = (SeekBar) findViewById(R.id.progressWidth);
        mRoundedEdges = (CheckBox) findViewById(R.id.roundedEdges);
        mTouchInside = (CheckBox) findViewById(R.id.touchInside);
        mClockwise = (CheckBox) findViewById(R.id.clockwise);

        mRotation.setProgress(mSeekArc.getArcRotation());
        mStartAngle.setProgress(mSeekArc.getStartAngle());
        mSweepAngle.setProgress(mSeekArc.getSweepAngle());
        mArcWidth.setProgress(mSeekArc.getArcWidth());
        mProgressWidth.setProgress(mSeekArc.getProgressWidth());

        mSeekArc.setOnSeekArcChangeListener(new OnSeekArcChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekArc seekArc) {
            }
            @Override
            public void onStartTrackingTouch(SeekArc seekArc) {
            }

            @Override
            public void onProgressChanged(SeekArc seekArc, int progress,
                                          boolean fromUser) {
                mSeekArcProgress.setText(String.valueOf(progress));
            }
        });

        mRotation.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setArcRotation(progress);
                mSeekArc.invalidate();
            }
        });

        mStartAngle.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setStartAngle(progress);
                mSeekArc.invalidate();
            }
        });

        mSweepAngle.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setSweepAngle(progress);
                mSeekArc.invalidate();
            }
        });

        mArcWidth.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setArcWidth(progress);
                mSeekArc.invalidate();
            }
        });

        mProgressWidth.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setProgressWidth(progress);
                mSeekArc.invalidate();
            }
        });

        mRoundedEdges.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
                mSeekArc.setRoundedEdges(isChecked);
                mSeekArc.invalidate();
            }
        });

        mTouchInside.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
                mSeekArc.setTouchInSide(isChecked);
            }
        });

        mClockwise.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
                mSeekArc.setClockwise(isChecked);
                mSeekArc.invalidate();
            }
        });

    }

}

下面是我的activity_main.xml，它对应于Java：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:tools="http://schemas.android.com/tools"
              xmlns:seekarc="http://schemas.android.com/apk/res-auto"
              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=".MainActivity" >

    <FrameLayout
        android:id="@+id/seekArcContainer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1" >

        <com.triggertrap.seekarc.SeekArc
            android:id="@+id/seekArc"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:padding="30dp"
            seekarc:rotation="180"
            seekarc:startAngle="30"
            seekarc:sweepAngle="300"
            seekarc:touchInside="true"
            seekarc:arcColor="#ff2ca3cc"
            seekarc:progressColor="#ffcc2d2a"/>

        <TextView
            android:id="@+id/seekArcProgress"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="0"
            android:textSize="40sp" />
    </FrameLayout>

    <include
        android:id="@+id/controls"
        layout="@layout/controls" />

</LinearLayout>

---

我不确定如何解释错误，因为我的xml文件不需要添加正确的问题？

您的

活动\u main.xml

必须具有id为的ListView

@android:id/list

报价文件

ListActivity具有由单个， 屏幕中央的全屏列表。但是如果你愿意的话,， 您可以通过设置自己的视图布局来自定义屏幕布局 在onCreate（）中使用setContentView（）。要做到这一点，你必须有自己的观点 包含一个id为“@android:id/list”的ListView对象（如果需要，则为list） 它在代码中）

---

但是在您的代码中，

setListAdapter

？。您还可以扩展

活动

而不是

列表

好的。它需要扩展活动而不是ListActivity？我需要将线性布局完全改为列表？我仍在努力理解why@XiJiaopin只需更改扩展活动即可。如果你想要一份清单，那情况就不同了。但是看看代码，我看不到that@XiJiaopin你为什么首先需要

ListActivity

？@Kushan我猜你是想评论其他人post@Raghunandan是的，谢谢：）我想知道为什么我没有从我想发表评论的帖子中得到回复。这就解决了这个问题：在您的情况下，只需扩展活动而不是ListActivity，它应该可以在保持ListActivity的同时修复它吗？