如何从列表视图访问 youtube 视频
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【中文标题】如何从列表视图访问 youtube 视频【英文标题】：how to get to youtube video from list view 【发布时间】：2018-11-14 21:56:48 【问题描述】：我有一个带有适配器的列表视图，该适配器有两个文本视图。 当我按下列表视图上的特定项目时，我想达到特定的意图。例如;如果项目有 textview1="a" 和 textview2="b"，则
if(textview2=="b")
do something.
我的问题是，我该如何处理 textview2。
谢谢
【问题讨论】：
approach textview2 是什么意思？
你的意思是点击列表视图项获取该数据。
【参考方案1】：
适配器代码：
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import java.util.List;
public class injuryadapter extends ArrayAdapter<injury>
Context context;
List<injury> objects;
public injuryadapter(Context context, int resource, int textViewResourceId, List<injury> objects)
super(context, resource, textViewResourceId, objects);
this.context=context;
this.objects=objects;
@Override
public View getView(int position, View convertView, ViewGroup parent)
LayoutInflater layoutInflater = ((Activity)context).getLayoutInflater();
final View view = layoutInflater.inflate(R.layout.activity_injuryadapter,parent,false);
TextView injuryzone = (TextView)view.findViewById(R.id.injury_zone);
final TextView injurytype = (TextView)view.findViewById(R.id.injury_type);
injury temp = objects.get(position);
injuryzone.setText(String.valueOf(temp.getInjuryZone()));
injurytype.setText(temp.getInjuryType());
return view;
列表视图出现的活动，我想从中按列表视图中的项目并转到 youtube 上的特定视频：
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity implements View.OnClickListener, AdapterView.OnItemClickListener
public ListView lv;
public static ArrayList<injury> injuryList;
Button bt1;
injuryadapter injuryadapter;
FirebaseAuth firebaseAuth;
FirebaseUser firebaseUser;
String vidid;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt1 = (Button) findViewById(R.id.add_injury);
bt1.setOnClickListener(this);
firebaseAuth = FirebaseAuth.getInstance();
firebaseUser = firebaseAuth.getCurrentUser();
lv = (ListView) findViewById(R.id.lv);
injuryList = new ArrayList<injury>();
injuryadapter= new injuryadapter(this,0,0,injuryList);
lv.setAdapter(injuryadapter);
lv.setOnItemClickListener(this);
showall();
public void showall()\\ method to read the extract the users data from the firebase and put it in the list view
FirebaseDatabase.getInstance().getReference().child("injury").addListenerForSingleValueEvent(new ValueEventListener()
@Override
public void onDataChange(DataSnapshot dataSnapshot)
for (DataSnapshot child : dataSnapshot.getChildren())
injury k = child.getValue(injury.class);
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if(k.getUid().equals(user.getUid()))
injuryList.add(k);
injuryadapter.notifyDataSetChanged();
@Override
public void onCancelled(DatabaseError error)
// Failed to read value
);
public void signout()
if (firebaseUser!=null)
firebaseAuth.signOut();
@Override
public boolean onCreateOptionsMenu (Menu menu)
getMenuInflater().inflate(R.menu.menu, menu);
return true;
@Override
public boolean onOptionsItemSelected (MenuItem item)
switch (item.getItemId())
case R.id.bhp:
Intent intent = new Intent(this, Main2Activity.class);
startActivity(intent);
return true;
case R.id.logout:
signout();
Intent intent1 = new Intent(this, Main2Activity.class);
startActivity(intent1);
return true;
return super.onOptionsItemSelected(item);
@Override
public void onClick(View view)
if (bt1==view)
Intent intent= new Intent(this, addinjury.class);
startActivity(intent);
我一开始想用setItemOnClickListener()方法收听列表视图，但我不知道如何处理每个项目的内容。
伤害等级：
public class injury
private String InjuryZone;
private String InjuryType;
private String Uid;
public injury()
public injury(String injuryZone, String injuryType, String uid)
InjuryZone = injuryZone;
InjuryType = injuryType;
Uid = uid;
public String getInjuryZone()
return InjuryZone;
public void setInjuryZone(String injuryZone)
InjuryZone = injuryZone;
public String getInjuryType()
return InjuryType;
public void setInjuryType(String injuryType)
InjuryType = injuryType;
public String getUid()
return Uid;
public void setUid(String uid)
Uid = uid;
【讨论】：
【参考方案2】：尝试在您的列表视图适配器中实现此功能。
-
在您的 listview 适配器中初始化 textview1 和 textview2，类似于下面的 getView 函数。
现在根据要求对受尊重的文本视图进行单独的单击操作。
public View getView(final int position, View convertView, ViewGroup parent)
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View itemView = inflater.inflate(R.layout.sample_layout_item, parent, false);
TextView textview1 = (TextView) itemView.findViewById(R.id.textview1);
TextView textview2 = (TextView) itemView.findViewById(R.id.textview2);
textview1.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
//Write the code that is required for textview1 onclick.
);
textview2.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
//Write the code that is required for textview2 onclick.
);
return itemView;
【讨论】：
我试图把它放在我的代码中。我想做的是打开一个 youtube 视频。为此，我需要使用意图打开一个新活动（youtube 视频），但似乎当我尝试使用 startactivity() 启动活动时它不起作用。 请发布您的代码，以便我们更准确地回答以上是关于如何从列表视图访问 youtube 视频的主要内容，如果未能解决你的问题，请参考以下文章