我正在尝试使用androidstudio的anychart模块,但它一直给我错误 java.lang.RuntimeException: Unable to start activity ComponentInfo
.
以下是一些值得注意的文件:
主活动.java
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import com.anychart.AnyChart;
import com.anychart.AnyChartView;
import com.anychart.chart.common.dataentry.DataEntry;
import com.anychart.chart.common.dataentry.ValueDataEntry;
import com.anychart.charts.Pie;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Pie pie = AnyChart.pie();
//
// List<DataEntry> data = new ArrayList<>();
// data.add(new ValueDataEntry("John", 10000));
// data.add(new ValueDataEntry("Jake", 12000));
// data.add(new ValueDataEntry("Peter", 18000));
//AnyChartView anyChartView = (AnyChartView) findViewById(R.id.any_chart_view);
//anyChartView.setChart(pie);
}
}
build.gradle(项目)
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath "com.android.tools.build:gradle:4.0.1"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
maven { url 'https://jitpack.io' }
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
build.gradle(应用程序)
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "30.0.1"
defaultConfig {
applicationId "org.jack.project"
minSdkVersion 21
targetSdkVersion 29
versionCode 1
versionName "1.0"
multiDexEnabled true
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'com.github.AnyChart:AnyChart-Android:1.1.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}
活动\u main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<!-- <com.anychart.anychart.AnyChartView-->
<!-- android:id="@+id/any_chart_view"-->
<!-- android:layout_width="match_parent"-->
<!-- android:layout_height="match_parent"-->
<!-- />-->
</androidx.constraintlayout.widget.ConstraintLayout>
错误如下:
Process: org.jack.project, PID: 956
java.lang.RuntimeException: Unable to start activity ComponentInfo{org.jack.project/org.jack.project.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'com.anychart.AnyChartView$JsListener com.anychart.AnyChartView.getJsListener()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'com.anychart.AnyChartView$JsListener com.anychart.AnyChartView.getJsListener()' on a null object reference
at com.anychart.APIlib.addJSLine(APIlib.java:27)
at com.anychart.charts.Pie.<init>(Pie.java:34)
at com.anychart.AnyChart.pie(AnyChart.java:130)
at org.jack.project.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:7802)
at android.app.Activity.performCreate(Activity.java:7791)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
我已经尝试过清理/清除缓存/重新启动/同步我的gradle文件。
在模拟器上,它说我的应用程序不断重启。
谢谢你的帮助。
1条答案
按热度按时间hxzsmxv21#
根本原因
我浏览了anychart的android源代码,找出了代码流程。
第一步。来自我们的应用程序活动/片段
步骤2.anychart.java
步骤3.pie.java
步骤4.apilib.java
就像我们打电话时看到的那样
addJSLine(String)
方法,它调用getJsListener()
方法anyChartView
,但此示例仅通过setActiveAnyChartView
方法。这个方法只从anychartview.java调用。这个
init()
方法将在的构造函数中调用AnyCharView
班级。因为在里面
activity_main.xml
,你把代码注解掉这就解释了为什么你会有例外。
解决方案:确保至少有一个
AnyChartView
已创建。解决方案1。声明
AnyCharView
内部xml文件解决方案2。如果要添加
AnyChartView
在运行时,您可以使用注:我看到这个问题在这里有报道,但还没有答案。