Android 如何从简单列表视图转到其他活动

我制作了一个名为AndRoot的应用程序

嗨！如何从我的ListView中单击App Developer的关注点，转到名为ConditionsActivity的活动

这是我的主题活动代码

package com.devcon.androot;

import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class TopicActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_topic);
        String[]  myStringArray={"App Developers' Concern","What is Root?","Pros of Rooted Device","Cons of Rooted Device",
                "How to Root","How Root can do that things?","Cheating and Hacking when Rooted?","Unrooted" +
                " vs. Rooted","Manufacturer vs. Root","Bring my warranty back!","How to Unroot","Do Unrooting" +
                " will bring my phone back to Original?","Credits"};
        ArrayAdapter<String> myAdapter=new
                ArrayAdapter<String>(
                this,
                android.R.layout.simple_list_item_1,
                myStringArray);
        ListView myList=(ListView)
                findViewById(R.id.listView);
        myList.setAdapter(myAdapter);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    }



}

这是我的content topic.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.devcon.androot.TopicActivity"
    tools:showIn="@layout/activity_topic">

    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/listView"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>

请尝试下面的代码

myList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if (position == 0) {
                    Intent intent = new Intent(TopicActivity.this, ConditionsActivity.class);
                    startActivity(intent);
                }
            }
        });

在Listview上调用McClickListener，如下所示：

   // your code to set adaptor on Listview

   myList.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        // call intent here to move to another Activity on listview item click
    }
});

---

解决方案是使用一个侦听器

myList.setOnItemClickListener(new OnItemClickListener()
{
    @Override 
    public void onItemClick(AdapterView<?> arg0, View arg1,int position, long arg3)
    { 
        if (myStringArray[position].equals("App Developers' Concern") {
            Intent intent = new Intent(TopicActivity.this, ConditionsActivity.class);
            TopicActivity.this.startActivity(intent);
        }
    }
});

---

您需要为listView设置一个McClickListener来处理单击事件。我对你的代码做了一些修改。请查收

包com.devcon.androot； 导入android.content.Intent； 导入android.os.Bundle； 导入android.support.design.widget.FloatingActionButton； 导入android.support.design.widget.Snackbar； 导入android.support.v7.app.AppActivity； 导入android.support.v7.widget.Toolbar； 导入android.view.view； 导入android.widget.AdapterView； 导入android.widget.ArrayAdapter； 导入android.widget.ListView； 公共类主题活动扩展了AppCompaticActivity{ @凌驾 受保护的void onCreateBundle savedInstanceState{ super.onCreatesavedInstanceState； setContentViewR.layout.activity_主题； String[]myStringArray={应用程序开发人员关心的问题，什么是Root？，根设备的优点，根设备的缺点， 如何扎根，扎根能做什么？扎根时作弊和黑客？未扎根+ 对根，制造商对根，把我的保修带回来！如何拔根，做拔根+ 将使我的手机恢复原样？、信用卡}； ArrayAdapter myAdapter=新建 定制 这 android.R.layout.simple\u list\u item\u 1， 迈斯特林加里； ListView myList=ListView findviewbydr.id.listView； myList.SetOnItemClickListener新建AdapterView.OnItemClickListener{ @凌驾 公共无效MClickAdapterView arg0，视图arg1，整型位置，长arg3{ 开关位置{ 案例0： startActivitynew IntentopActivity.this、ConditionsActivity.class； 打破 } }; myList.setAdaptermyAdapter； Toolbar Toolbar=Toolbar findViewByIdR.id.Toolbar； 设置支持操作工具栏； getSupportActionBar.SetDisplayHomeAsupabledTrue； }

---

} 您需要为ListView设置一个侦听器。 以下是您的操作方法：

            myList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                //Start new activity "YourSecondActivity"
                Intent intent = new Intent(this, YourSecondActivity.class);

                //Here you can send e.g. the items position by putting it as an extra into the intent
                int itemClicked = position;
                intent.putExtra("com.mycompany.myfirstapp.MESSAGE", itemClicked);
                startActivity(intent);
            }
        });

---

顺便说一句：我不认为你的问题与javascript有关。你应该删除这个标签。

你必须为你的列表设置一个监听器

myList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

            Intent intent = new Intent(this,ConditionsActivity.class);

            startActivity(intent);
        }
    });

---

当你尝试时会发生什么？

myListview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if (position == 0) {
                    Intent intent = new Intent(TopicActivity.this, ConditionsActivity.class);
                    startActivity(intent);
                }
            }
        });

package com.devcon.androot;

import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class TopicActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_topic);
        String[]  myStringArray={"App Developers' Concern","What is Root?","Pros of Rooted Device","Cons of Rooted Device",
                "How to Root","How Root can do that things?","Cheating and Hacking when Rooted?","Unrooted" +
                " vs. Rooted","Manufacturer vs. Root","Bring my warranty back!","How to Unroot","Do Unrooting" +
                " will bring my phone back to Original?","Credits"};
        ArrayAdapter<String> myAdapter=new
                ArrayAdapter<String>(
                this,
                android.R.layout.simple_list_item_1,
                myStringArray);
        ListView myList=(ListView)
                findViewById(R.id.listView);

        myList.setOnItemClickListener(new AdapterView.OnItemClickListener(){ 

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
                switch(position) {
                    case 0:
                        startActivity(new Intent(TopicActivity.this,     ConditionsActivity.class);
                    break;
            }
        });
        myList.setAdapter(myAdapter);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    }



}