无法在Android Studio中使用jsoup

Question

我尝试使用此视频安装jsoup

接着，一堆问题出现了，一个接着一个：

在修复了所有这些之后，我尝试运行我的测试应用程序（这是我的主要活动）

package babis.querytest;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;

import java.io.IOException;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Log.i("qt","before");
    try {
        Log.i("qt","before1");
        Document doc= Jsoup.connect("http://www.google.com").get();
        Log.i("qt","after0");
    } catch (IOException e) {

    }
    Log.i("qt","after");
}
}

我的Logcat是这个

这是我的建筑.Gradle

apply plugin: 'com.android.application'

android {
compileSdkVersion 26
defaultConfig {
    applicationId "babis.querytest"
    minSdkVersion 23
    targetSdkVersion 26
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
packagingOptions {
    exclude 'META-INF/README.md'
    exclude 'META-INF/CHANGES'
}

}

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation project(':jsoup-1.11.2')
compile 'org.jsoup:jsoup:1.11.2'

}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="babis.querytest">
<uses-permission android:name="android.permission.INTERNET" />

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

</manifest>

应用程序在文档行崩溃。问题是什么？（wifi正在工作）

Answer 1

您必须在非主线程上的异步任务中运行它

 new AsyncTask<Void, Void, YourDataObject>() {
            @Override
            protected YourDataObject doInBackground(Void... params) {
                Document doc= Jsoup.connect("http://www.google.com").get();
                // parse the document here and return what ever data you want
                return myFunData;
            }

            @Override
            protected void onPostExecute(YourDataObject data) {
                //update UI based on results of parsing html
            }
        }.execute((Void) null);