Java 如何在水平条形图中设置标签和值？
我正在使用。请检查我下面的代码 活动\u main.xmlJava 如何在水平条形图中设置标签和值？,java,android,bar-chart,mpandroidchart,Java,Android,Bar Chart,Mpandroidchart,我正在使用。请检查我下面的代码 活动\u main.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" androi
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
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.graphs.graphs2.MainActivity">
<com.github.mikephil.charting.charts.HorizontalBarChart
android:id="@+id/chart"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
BarView<com.example.graphs.viewchart.BarView
android:id="@+id/low_bar"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="8dp" />
通过查看所需输出的图像，应该可以在不使用第三方库的情况下创建此类简单条形图。“条”可以由简单的
视图组成，这些视图可以根据以总可用宽度的百分比计算的数字来加长或缩短。以下是您如何实现这一目标的示例：
1） 创建一个长度可调的自定义视图
，用作“条形图”
3） 在XML
中设置它。条的重量
s设置为1，因此它们填满所有可用空间，这将构成“100%”读数
以下是输出的图像：
通过查看所需输出的图像，应该可以在不使用第三方库的情况下创建此类简单条形图。“条”可以由简单的视图组成，这些视图可以根据以总可用宽度的百分比计算的数字来加长或缩短。以下是您如何实现这一目标的示例：
1） 创建一个长度可调的自定义视图
，用作“条形图”
3） 在XML
中设置它。条的重量
s设置为1，因此它们填满所有可用空间，这将构成“100%”读数
以下是输出的图像：
查看图像时，您最好完全放弃库，只需为带有彩色背景的条形图使用标准的视图，并根据其百分比值动态设置视图的长度。@p谢谢您的回复。请问我怎么做？有代码示例吗？好的。我收集了一个如何实现这一点的示例。看这张图片，您最好完全放弃库，只需对带有彩色背景的条形图使用标准的视图
，并根据其百分比值动态设置视图的长度。@PPartisan感谢您的回复。请问我怎么做？有代码示例吗？好的。我已经收集了一个你如何做到这一点的例子。谢谢。一个小问题com.github.ppartisan.graphish.view.BarView
这是来自github的吗？在这种情况下，我需要先安装依赖项？@PeakGen不，这只是我设置的自定义视图的路径。如果愿意，您可以将BarView
复制到您自己的项目中，并将layout
文件更新到适当的路径。这太棒了。我会检查的。您好，您的代码生成了一个错误。我用完整的stacktrace更新了我的问题，请检查您的com.github.ppartisan.graphish….
package/path不可用。我在网上也找不到。谢谢。一个小问题com.github.ppartisan.graphish.view.BarView
这是来自github的吗？在这种情况下，我需要先安装依赖项？@PeakGen不，这只是我设置的自定义视图的路径。如果愿意，您可以将BarView
复制到您自己的项目中，并将layout
文件更新到适当的路径。这太棒了。我会检查的。您好，您的代码生成了一个错误。我用完整的stacktrace更新了我的问题，请检查您的com.github.ppartisan.graphish….
package/path不可用。我在网上也找不到。
01-11 10:51:10.402 26974-26974/com.example.graphs.viewchart E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.graphs.viewchart, PID: 26974
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.graphs.viewchart/com.example.graphs.viewchart.MainActivity}: android.view.InflateException: Binary XML file line #36: Error inflating class com.github.ppartisan.graphish.view.BarView
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2656)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2721)
at android.app.ActivityThread.access$900(ActivityThread.java:168)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5753)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)
Caused by: android.view.InflateException: Binary XML file line #36: Error inflating class com.github.ppartisan.graphish.view.BarView
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:757)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:284)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.example.graphs.viewchart.MainActivity.onCreate(MainActivity.java:21)
at android.app.Activity.performCreate(Activity.java:6112)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1117)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2609)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2721)
at android.app.ActivityThread.access$900(ActivityThread.java:168)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5753)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.github.ppartisan.graphish.view.BarView" on path: DexPathList[[zip file "/data/app/com.example.graphs.viewchart-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.view.LayoutInflater.createView(LayoutInflater.java:571)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:284)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.example.graphs.viewchart.MainActivity.onCreate(MainActivity.java:21)
at android.app.Activity.performCreate(Activity.java:6112)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1117)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2609)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2721)
at android.app.ActivityThread.access$900(ActivityThread.java:168)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5753)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)
Suppressed: java.lang.ClassNotFoundException: Didn't find class "com.github.ppartisan.graphish.view.BarView" on path: DexPathList[[dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-support-annotations-24.2.1_ee83e15951f6e098dcf8d5c7289233f29c08ba29-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_9-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_8-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_7-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_6-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_5-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_4-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_3-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_2-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_1-classes.dex", dex file "/data/data/com.example.graphs.viewchart/files/instant-run/dex/slice-slice_0-classes.dex", dex file "/data/data/com.exam
<com.example.graphs.viewchart.BarView
android:id="@+id/low_bar"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="8dp" />
public final class BarView extends View {
private final Paint mPaint = new Paint();
private int percent = 0;
public BarView(Context context) {
super(context);
init();
}
public BarView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public BarView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private void init() {
mPaint.setStyle(Paint.Style.FILL);
mPaint.setAntiAlias(true);
}
public void set(int color, int percent) {
if(percent < 0 || percent > 100) {
throw new IllegalArgumentException("Percent value must range from 0 to 100");
}
mPaint.setColor(color);
this.percent = percent;
invalidate();
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
final float width = MeasureSpec.getSize(widthMeasureSpec);
final float adjWidth = (width*((float)percent/100));
setMeasuredDimension((int)adjWidth, heightMeasureSpec);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawRect(0,0,getWidth(),getHeight(),mPaint);
}
}
public class MainActivity extends AppCompatActivity {
private TextView mLowLabel, mMidLabel, mHighLabel;
private BarView mLowBar, mMidBar, mHighBar;
//Some sample percentage values
private final int low = 17;
private final int mid = 90;
private final int high = 34;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLowBar = (BarView) findViewById(R.id.low_bar);
mMidBar = (BarView) findViewById(R.id.mid_bar);
mHighBar = (BarView) findViewById(R.id.high_bar);
mLowLabel = (TextView) findViewById(R.id.low_text);
mMidLabel = (TextView) findViewById(R.id.mid_text);
mHighLabel = (TextView) findViewById(R.id.high_text);
mLowBar.set(Color.BLUE, low);
mMidBar.set(Color.RED, mid);
mHighBar.set(Color.GREEN, high);
mLowLabel.setText(getPercentage(low));
mMidLabel.setText(getPercentage(mid));
mHighLabel.setText(getPercentage(high));
}
private String getPercentage(int per) {
return per + "%";
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
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.github.ppartisan.graphish.MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_centerInParent="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="56dp"
android:orientation="horizontal"
android:gravity="center_vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Low"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:minEms="3"
android:textStyle="bold"/>
<com.github.ppartisan.graphish.view.BarView
android:id="@+id/low_bar"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="8dp" />
<TextView
android:id="@+id/low_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="56dp"
android:orientation="horizontal"
android:gravity="center_vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mid"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:minEms="3"
android:textStyle="bold"/>
<com.github.ppartisan.graphish.view.BarView
android:id="@+id/mid_bar"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="8dp" />
<TextView
android:id="@+id/mid_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="56dp"
android:orientation="horizontal"
android:gravity="center_vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="High"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:minEms="3"
android:textStyle="bold"/>
<com.github.ppartisan.graphish.view.BarView
android:id="@+id/high_bar"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="8dp" />
<TextView
android:id="@+id/high_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>