[英]Clickable Items in listview
我试图使我的listview项目可点击; 但无法使其正常运行。 当我单击某个项目时,它会切换屏幕,但不会切换到所需的屏幕。 这是代码
private ListView lv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signup);
lv = (ListView) findViewById(R.id.listView1);
// Instanciating an array list (you don't need to do this, you already have yours)
ArrayList<String> menu_Items = new ArrayList<String>();
menu_Items.add("Fill Treatment Form");
menu_Items.add("View Medical History");
menu_Items.add("View Medication");
menu_Items.add("View Diet");
menu_Items.add("View First Aid");
menu_Items.add("Look Up Map");
menu_Items.add("Account Settings");
// This is the array adapter, it takes the context of the activity as a first // parameter, the type of list view as a second parameter and your array as a third parameter
ArrayAdapter<String> arrayAdapter =
new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, menu_Items);
lv.setAdapter(arrayAdapter);
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View view, int position, long id) {
Intent i = new Intent(getApplicationContext(), FillTreatmentActivity.class);
startActivity(i);
}
});
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg1, View view, int position, long id) {
Intent i = new Intent(getApplicationContext(), MedicalHistoryActivity.class);
startActivity(i);
}
});
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg2, View view, int position, long id) {
Intent i = new Intent(getApplicationContext(), MedicationActivity.class);
startActivity(i);
}
});
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg3, View view, int position, long id) {
Intent i = new Intent(getApplicationContext(),DietActivity.class);
startActivity(i);
}
});
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg4, View view, int position, long id) {
Intent i = new Intent(getApplicationContext(),FirstAidActivity.class);
startActivity(i);
}
});
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg5, View view, int position, long id) {
Intent i = new Intent(getApplicationContext(),MapActivity.class);
startActivity(i);
}
});
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg6, View view, int position, long id) {
Intent i = new Intent(getApplicationContext(),SettingsActivity.class);
startActivity(i);
}
});
}
当我单击任何一个列表视图项时,“帐户设置活动”将打开。 我是新手,所以请不要判断我的编码:)
一个listview只能有一个OnItemClickListener
,因此除最后一个OnItemClickListener
所有东西都将被丢弃。 这就是无论您点击哪个项目, SettingsActivity
都是开放式的原因。
要解决此问题,请使用一个侦听器,让该侦听器处理不同的选项。
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg1, View view, int position, long id) {
switch(position) {
case 0:
// start activity 1
break;
case 1:
// start activity 2
break;
case 2:
// start activity 3
break;
// more case statements
}
});
为什么不在listview
的布局中添加android:onClick="myClickMethod"
,然后创建一个具有相同名称的方法? 在其中,您可以看到完全按下了鞭状视图。 另外,listView只有一个onClickListener
;-)
干杯
尝试向您的点击监听器添加switch语句
private ListView lv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signup);
lv = (ListView) findViewById(R.id.listView1);
// Instanciating an array list (you don't need to do this, you already have yours)
ArrayList<String> menu_Items = new ArrayList<String>();
menu_Items.add("Fill Treatment Form");
menu_Items.add("View Medical History");
menu_Items.add("View Medication");
menu_Items.add("View Diet");
menu_Items.add("View First Aid");
menu_Items.add("Look Up Map");
menu_Items.add("Account Settings");
// This is the array adapter, it takes the context of the activity as a first // parameter, the type of list view as a second parameter and your array as a third parameter
ArrayAdapter<String> arrayAdapter =
new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, menu_Items);
lv.setAdapter(arrayAdapter);
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View view, int position, long id) {
switch(position){
case 0:
Intent i = new Intent(getApplicationContext(), FillTreatmentActivity.class);
startActivity(i);
break;
case 1:
Intent i = new Intent(getApplicationContext(), MedicalHistoryActivity.class);
startActivity(i);
break;
case 2:
Intent i = new Intent(getApplicationContext(), MedicationActivity.class);
startActivity(i);
break;
case 3:
Intent i = new Intent(getApplicationContext(),DietActivity.class);
startActivity(i);
break;
case 4:
Intent i = new Intent(getApplicationContext(),FirstAidActivity.class);
startActivity(i);
break;
case 5:
Intent i = new Intent(getApplicationContext(),MapActivity.class);
startActivity(i);
break;
case 6:
Intent i = new Intent(getApplicationContext(),SettingsActivity.class);
startActivity(i);
break;
}
}
});
}
这是这样做的方式; 我做错了。 感谢您的帮助。 和平/
private ListView lv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signup);
lv = (ListView) findViewById(R.id.listView1);
// Instanciating an array list (you don't need to do this, you already have yours)
ArrayList<String> menu_Items = new ArrayList<String>();
menu_Items.add("Fill Treatment Form");
menu_Items.add("View Medical History");
menu_Items.add("View Medication");
menu_Items.add("View Diet");
menu_Items.add("View First Aid");
menu_Items.add("Look Up Map");
menu_Items.add("Account Settings");
// This is the array adapter, it takes the context of the activity as a first // parameter, the type of list view as a second parameter and your array as a third parameter
ArrayAdapter<String> arrayAdapter =
new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, menu_Items);
lv.setAdapter(arrayAdapter);
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View view, int position, long id) {
switch(position){
case 0:
Intent i = new Intent(getApplicationContext(), FillTreatmentActivity.class);
startActivity(i);
break;
case 1:
Intent j = new Intent(getApplicationContext(), MedicalHistoryActivity.class);
startActivity(j);
break;
case 2:
Intent k = new Intent(getApplicationContext(), MedicationActivity.class);
startActivity(k);
break;
case 3:
Intent l = new Intent(getApplicationContext(),DietActivity.class);
startActivity(l);
break;
case 4:
Intent m = new Intent(getApplicationContext(),FirstAidActivity.class);
startActivity(m);
break;
case 5:
Intent n = new Intent(getApplicationContext(),MapActivity.class);
startActivity(n);
break;
case 6:
Intent o = new Intent(getApplicationContext(),SettingsActivity.class);
startActivity(o);
break;
}
}
});
您需要在Listener上创建它将处理所有列表。 像这样:
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView arg6, View view, int position, long id) {
swith(position){
case 1:
Intent i = new Intent(getApplicationContext(), FillTreatmentActivity.class);
startActivity(i);
break;
case 2:
...
}
}
});
或者,您可以扩展ArrayAdaptyer类并为每个元素实现单个侦听器
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