Java 如何基于listview项目单击启动活动?
我有以下代码,但我已经尝试了好几天了,我似乎不知道如何根据单击的listview项目启动活动,结果[position]不适用于启动意图Java 如何基于listview项目单击启动活动?,java,android,listview,android-listview,onclick,Java,Android,Listview,Android Listview,Onclick,我有以下代码,但我已经尝试了好几天了,我似乎不知道如何根据单击的listview项目启动活动,结果[position]不适用于启动意图 public class CustomAdapter extends BaseAdapter{ String [] result; Context context; int [] imageId; private static LayoutInflater inflater=null; public CustomAdapter(MainActivity main
public class CustomAdapter extends BaseAdapter{
String [] result;
Context context;
int [] imageId;
private static LayoutInflater inflater=null;
public CustomAdapter(MainActivity mainActivity, String[] prgmNameList, int[] prgmImages) {
// TODO Auto-generated constructor stub
result=prgmNameList;
context=mainActivity;
imageId=prgmImages;
inflater = ( LayoutInflater )context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return result.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public class Holder
{
TextView tv;
ImageView img;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
Holder holder=new Holder();
View rowView;
rowView = inflater.inflate(R.layout.program_list, null);
holder.tv=(TextView) rowView.findViewById(R.id.textView1);
holder.img=(ImageView) rowView.findViewById(R.id.imageView1);
holder.tv.setText(result[position]);
holder.img.setImageResource(imageId[position]);
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(context, "You Clicked "+result[position], Toast.LENGTH_LONG).show();
}
});
return rowView;
}
编辑:如果单击第一个列表项,我希望它启动一个活动(图像类),如果单击第二个列表项,则启动图像2类,依此类推。基于ListView的项目启动活动在适配器中未完成单击。它是在显示ListView的活动中完成的: 在您的活动中:
mListView.setAdapter(mAdapter); //mAdapter is your CustomAdapter
mListView.setClickable(true);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Start the activity here.
//based on the value of position or id.
}
});
mListView.setAdapter(mAdapter)//mAdapter是您的自定义适配器
mListView.setClickable(true);
mListView.setOnItemClickListener(新的AdapterView.OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
//在这里开始活动。
//基于位置或id的值。
}
});
基于ListView的项目单击启动活动未在适配器中完成。它是在显示ListView的活动中完成的:
在您的活动中:
mListView.setAdapter(mAdapter); //mAdapter is your CustomAdapter
mListView.setClickable(true);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Start the activity here.
//based on the value of position or id.
}
});
mListView.setAdapter(mAdapter)//mAdapter是您的自定义适配器
mListView.setClickable(true);
mListView.setOnItemClickListener(新的AdapterView.OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
//在这里开始活动。
//基于位置或id的值。
}
});
基于ListView的项目单击启动活动未在适配器中完成。它是在显示ListView的活动中完成的:
在您的活动中:
mListView.setAdapter(mAdapter); //mAdapter is your CustomAdapter
mListView.setClickable(true);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Start the activity here.
//based on the value of position or id.
}
});
mListView.setAdapter(mAdapter)//mAdapter是您的自定义适配器
mListView.setClickable(true);
mListView.setOnItemClickListener(新的AdapterView.OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
//在这里开始活动。
//基于位置或id的值。
}
});
基于ListView的项目单击启动活动未在适配器中完成。它是在显示ListView的活动中完成的:
在您的活动中:
mListView.setAdapter(mAdapter); //mAdapter is your CustomAdapter
mListView.setClickable(true);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Start the activity here.
//based on the value of position or id.
}
});
mListView.setAdapter(mAdapter)//mAdapter是您的自定义适配器
mListView.setClickable(true);
mListView.setOnItemClickListener(新的AdapterView.OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
//在这里开始活动。
//基于位置或id的值。
}
});
不要将位置作为getView()中的最终静态参数,这是错误的方法。使用下面的getView方法从列表项启动触觉
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
Holder holder=new Holder();
View rowView;
rowView = inflater.inflate(R.layout.program_list, null);
holder.tv=(TextView) rowView.findViewById(R.id.textView1);
holder.img=(ImageView) rowView.findViewById(R.id.imageView1);
holder.tv.setText(result[position]);
holder.img.setImageResource(imageId[position]);
rowView.setTag(position);
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int pos = (Integer) v.getTag;
Intent i = new Intent(context, YourActivity.class);
context.startActivity(i);
}
});
return rowView;
}
不要在getView()中将位置作为最后一个静态参数,这是错误的。使用下面的getView方法从列表项启动触觉
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
Holder holder=new Holder();
View rowView;
rowView = inflater.inflate(R.layout.program_list, null);
holder.tv=(TextView) rowView.findViewById(R.id.textView1);
holder.img=(ImageView) rowView.findViewById(R.id.imageView1);
holder.tv.setText(result[position]);
holder.img.setImageResource(imageId[position]);
rowView.setTag(position);
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int pos = (Integer) v.getTag;
Intent i = new Intent(context, YourActivity.class);
context.startActivity(i);
}
});
return rowView;
}
不要在getView()中将位置作为最后一个静态参数,这是错误的。使用下面的getView方法从列表项启动触觉
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
Holder holder=new Holder();
View rowView;
rowView = inflater.inflate(R.layout.program_list, null);
holder.tv=(TextView) rowView.findViewById(R.id.textView1);
holder.img=(ImageView) rowView.findViewById(R.id.imageView1);
holder.tv.setText(result[position]);
holder.img.setImageResource(imageId[position]);
rowView.setTag(position);
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int pos = (Integer) v.getTag;
Intent i = new Intent(context, YourActivity.class);
context.startActivity(i);
}
});
return rowView;
}
不要在getView()中将位置作为最后一个静态参数,这是错误的。使用下面的getView方法从列表项启动触觉
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
Holder holder=new Holder();
View rowView;
rowView = inflater.inflate(R.layout.program_list, null);
holder.tv=(TextView) rowView.findViewById(R.id.textView1);
holder.img=(ImageView) rowView.findViewById(R.id.imageView1);
holder.tv.setText(result[position]);
holder.img.setImageResource(imageId[position]);
rowView.setTag(position);
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int pos = (Integer) v.getTag;
Intent i = new Intent(context, YourActivity.class);
context.startActivity(i);
}
});
return rowView;
}
请用onclick试试这个
if(position ==1){
--fire your first intent here.--
} else if(position ==2) {
-------your other intent------
}
----etc
请用onclick试试这个
if(position ==1){
--fire your first intent here.--
} else if(position ==2) {
-------your other intent------
}
----etc
请用onclick试试这个
if(position ==1){
--fire your first intent here.--
} else if(position ==2) {
-------your other intent------
}
----etc
请用onclick试试这个
if(position ==1){
--fire your first intent here.--
} else if(position ==2) {
-------your other intent------
}
----etc
试试这样的
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(v.getContext(),ActivityYouWantToGo.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
v.getContext().startActivity(intent);
Toast.makeText(context, "You Clicked "+result[position], Toast.LENGTH_LONG).show();
}
});
编辑
只需在BaseAdapter
public void StartActivityForImages(Context context, int i){
switch (i){
case 0:
Intent Intent = new Intent(context, Image0.class);
context.startActivity(Intent);
break;
case 1:
Intent Intent2 = new Intent(context, Image1.class);
context.startActivity(Intent2);
break;
case 2:
Intent Intent3 = new Intent(context, Image3.class);
context.startActivity(Intent3);
break;
......
}
}
在您的setOnClickListener()
您可以按如下方式调用此方法:
StartActivityForImages(v.getContext(),position);
Toast.makeText(context, "You Clicked " + result[position], Toast.LENGTH_LONG).show();
有效的方法
如果您不想创建一个方法并执行这些操作,您可以执行以下操作:
try {
String className =getPackageName()+".Image"+2;
Intent openNewIntent = new Intent(v.getContext(), Class.forName( className ) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
Log.d("ERRORPEW", e.getMessage());
e.printStackTrace();
}
创建一个包含下一个类名称的字符串,如:
String NextActivity = getPackageName()+".Image"+position;
然后你可以这样做:
try {
String className =getPackageName()+".Image"+2;
Intent openNewIntent = new Intent(v.getContext(), Class.forName( className ) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
Log.d("ERRORPEW", e.getMessage());
e.printStackTrace();
}
试试这样的
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(v.getContext(),ActivityYouWantToGo.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
v.getContext().startActivity(intent);
Toast.makeText(context, "You Clicked "+result[position], Toast.LENGTH_LONG).show();
}
});
编辑
只需在BaseAdapter
public void StartActivityForImages(Context context, int i){
switch (i){
case 0:
Intent Intent = new Intent(context, Image0.class);
context.startActivity(Intent);
break;
case 1:
Intent Intent2 = new Intent(context, Image1.class);
context.startActivity(Intent2);
break;
case 2:
Intent Intent3 = new Intent(context, Image3.class);
context.startActivity(Intent3);
break;
......
}
}
在您的setOnClickListener()
您可以按如下方式调用此方法:
StartActivityForImages(v.getContext(),position);
Toast.makeText(context, "You Clicked " + result[position], Toast.LENGTH_LONG).show();
有效的方法
如果您不想创建一个方法并执行这些操作,您可以执行以下操作:
try {
String className =getPackageName()+".Image"+2;
Intent openNewIntent = new Intent(v.getContext(), Class.forName( className ) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
Log.d("ERRORPEW", e.getMessage());
e.printStackTrace();
}
创建一个包含下一个类名称的字符串,如:
String NextActivity = getPackageName()+".Image"+position;
然后你可以这样做:
try {
String className =getPackageName()+".Image"+2;
Intent openNewIntent = new Intent(v.getContext(), Class.forName( className ) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
Log.d("ERRORPEW", e.getMessage());
e.printStackTrace();
}
试试这样的
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(v.getContext(),ActivityYouWantToGo.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
v.getContext().startActivity(intent);
Toast.makeText(context, "You Clicked "+result[position], Toast.LENGTH_LONG).show();
}
});
编辑
只需在BaseAdapter
public void StartActivityForImages(Context context, int i){
switch (i){
case 0:
Intent Intent = new Intent(context, Image0.class);
context.startActivity(Intent);
break;
case 1:
Intent Intent2 = new Intent(context, Image1.class);
context.startActivity(Intent2);
break;
case 2:
Intent Intent3 = new Intent(context, Image3.class);
context.startActivity(Intent3);
break;
......
}
}
在您的setOnClickListener()
您可以按如下方式调用此方法:
StartActivityForImages(v.getContext(),position);
Toast.makeText(context, "You Clicked " + result[position], Toast.LENGTH_LONG).show();
有效的方法
如果您不想创建一个方法并执行这些操作,您可以执行以下操作:
try {
String className =getPackageName()+".Image"+2;
Intent openNewIntent = new Intent(v.getContext(), Class.forName( className ) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
Log.d("ERRORPEW", e.getMessage());
e.printStackTrace();
}
创建一个包含下一个类名称的字符串,如:
String NextActivity = getPackageName()+".Image"+position;
然后你可以这样做:
try {
String className =getPackageName()+".Image"+2;
Intent openNewIntent = new Intent(v.getContext(), Class.forName( className ) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
Log.d("ERRORPEW", e.getMessage());
e.printStackTrace();
}
试试这样的
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(v.getContext(),ActivityYouWantToGo.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
v.getContext().startActivity(intent);
Toast.makeText(context, "You Clicked "+result[position], Toast.LENGTH_LONG).show();
}
});
编辑
只需在BaseAdapter
public void StartActivityForImages(Context context, int i){
switch (i){
case 0:
Intent Intent = new Intent(context, Image0.class);
context.startActivity(Intent);
break;
case 1:
Intent Intent2 = new Intent(context, Image1.class);
context.startActivity(Intent2);
break;
case 2:
Intent Intent3 = new Intent(context, Image3.class);
context.startActivity(Intent3);
break;
......
}
}
在您的setOnClickListener()
您可以按如下方式调用此方法:
StartActivityForImages(v.getContext(),position);
Toast.makeText(context, "You Clicked " + result[position], Toast.LENGTH_LONG).show();
有效的方法
如果您不想创建一个方法并执行这些操作,您可以执行以下操作:
try {
String className =getPackageName()+".Image"+2;
Intent openNewIntent = new Intent(v.getContext(), Class.forName( className ) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
Log.d("ERRORPEW", e.getMessage());
e.printStackTrace();
}
创建一个包含下一个类名称的字符串,如:
String NextActivity = getPackageName()+".Image"+position;
然后你可以这样做:
try {
String className =getPackageName()+".Image"+2;
Intent openNewIntent = new Intent(v.getContext(), Class.forName( className ) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
Log.d("ERRORPEW", e.getMessage());
e.printStackTrace();
}
你有没有试着在上面加上一个
意图?比如Intent Intent=newintent(convertView.getContext(),ActivityUwant.class);星触觉(意向)代码>如果不起作用,请尝试rowView.getContext();你的课程名为Images2、Images3、Images4等等?@Skizo yea,一个展示每种产品信息的课程。好的,我正在回答你的问题,给我5分钟:)@Skizo非常感谢:)你试过在上面写一个意图吗?比如Intent Intent=newintent(convertView.getContext(),ActivityUwant.class);星触觉(意向)代码>如果不起作用,请尝试rowView.getContext();你的类叫做Images2、Images3、Images4等等?@Skizo yea,一个显示每种产品信息的类。好的,我是wor