Android 未找到与给定名称匹配的资源（位于值为“@drawable/icon”的“icon”）

我是android新手，我正在尝试制作一个可以分析噪音水平的应用程序，我发现了一个有用的资源，不幸的是，我得到了上述错误。我已附上我所有的文件，因此，任何线索来修复这将是非常感谢

这是清单文件

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.prabalgupta.noisealert"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="16"
        android:targetSdkVersion="23" />

    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />

    <application
        android:icon="@drawable/icon"
        android:label="@string/app_name" >
        <activity
            android:name="com.androidexample.noisealert.NoiseAlert"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <!--
             ATTENTION: This was auto-generated to add Google Play services to your project for
             App Indexing.  See https://g.co/AppIndexing/AndroidStudio for more information.
        -->
        <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />
    </application>

</manifest>

SoundLevelView.java

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.View;

class SoundLevelView extends View {
private Drawable mGreen;
private Drawable mRed;
private Paint mBackgroundPaint;

private int mHeight;
private int mWidth;

private int mThreshold = 0;
private int mVol = 0;


public SoundLevelView(Context context, AttributeSet attrs) {
    super(context, attrs);

    mGreen  = context.getResources().getDrawable(
            R.drawable.greenbar);
    mRed    = context.getResources().getDrawable(
            R.drawable.redbar);

    mWidth  = mGreen.getIntrinsicWidth();
    setMinimumWidth(mWidth*10);

    mHeight = mGreen.getIntrinsicHeight();
    setMinimumHeight(mHeight);

    //Used to paint canvas background color
    mBackgroundPaint = new Paint();
    mBackgroundPaint.setColor(Color.BLACK);

}

public void setLevel(int volume, int threshold) {
    if (volume == mVol && threshold == mThreshold) return;
    mVol = volume;
    mThreshold = threshold;

    // invalidate Call onDraw method and draw voice points
    invalidate();
}

@Override
public void onDraw(Canvas canvas) {

    canvas.drawPaint(mBackgroundPaint);

    for (int i=0; i<= mVol; i++) {
        Drawable bar;
        if (i< mThreshold)
            bar = mGreen;
        else
            bar = mRed;

        bar.setBounds((10-i)*mWidth, 0, (10-i+1)*mWidth, mHeight);
        bar.draw(canvas);
    }
}
}

活动\u noise\u alert.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<TextView
    android:id="@+id/status"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:textSize="25sp"
    android:textStyle="bold"
    android:text="stopped"
    />
<RelativeLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        >

        <com.androidexample.noisealert.SoundLevelView
            android:id="@+id/volume"
            android:layout_width="230sp"
            android:layout_height="60sp"

            />
    </LinearLayout>
</RelativeLayout>

---

在清单文件中，您试图为应用程序设置一个图标 通过此代码，android:icon=@drawable/icon

这意味着您应该在res/drawable文件夹中放置一个icon.png img。否则，将icon.png img放置在drawable文件夹中，您的问题将得到解决。img文件名不能强制为icon.png，它可以是任何名称，如ic_launcher.png。。。。。然后，您需要像下面这样更改清单文件：icon=@drawable/ic_launcher

但img将是png格式

---

谢谢

您的drawable文件夹中似乎缺少一个名为icon.png的文件。请尝试发布一个最小的示例-我们复制您的问题所需的最小代码量。你发布的内容需要做很多工作，这会使你的问题更难回答。

import java.io.IOException;
import android.media.MediaRecorder;

public class SoundMeter {
// This file is used to record voice
static final private double EMA_FILTER = 0.6;

private MediaRecorder mRecorder = null;
private double mEMA = 0.0;

public void start() {

    if (mRecorder == null) {

        mRecorder = new MediaRecorder();
        mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
        mRecorder.setOutputFile("/dev/null");

        try {
            mRecorder.prepare();
        } catch (IllegalStateException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        mRecorder.start();
        mEMA = 0.0;
    }
}

public void stop() {
    if (mRecorder != null) {
        mRecorder.stop();
        mRecorder.release();
        mRecorder = null;
    }
}

public double getAmplitude() {
    if (mRecorder != null)
        return  (mRecorder.getMaxAmplitude()/2700.0);
    else
        return 0;

}

public double getAmplitudeEMA() {
    double amp = getAmplitude();
    mEMA = EMA_FILTER * amp + (1.0 - EMA_FILTER) * mEMA;
    return mEMA;
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<TextView
    android:id="@+id/status"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:textSize="25sp"
    android:textStyle="bold"
    android:text="stopped"
    />
<RelativeLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        >

        <com.androidexample.noisealert.SoundLevelView
            android:id="@+id/volume"
            android:layout_width="230sp"
            android:layout_height="60sp"

            />
    </LinearLayout>
</RelativeLayout>