[英]How to start activities by swiping different listview items in android?
[英]How to open different Activities with my listView items?
我有一個包含9個不同字符串的String-Array,並使用此字符串創建了一個listView; 現在,當我點擊listView的每個元素時,我想打開一個不同的Activity。 我已經試過了
row.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent((Activity)context, Workouts.class));
}
});
但它只為所有項目打開相同的活動。 如果你能為我提供一個有效的代碼,那將是非常好的,因為我已經嘗試過管理這個問題。
主要活動:
public class MainActivity extends Activity implements OnItemClickListener {
private DrawerLayout drawerLayout;
private ListView listView;
private ActionBarDrawerToggle drawerListener;
private MyAdapter MyAdapter;
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawerLayout=(DrawerLayout) findViewById(R.id.drawerLayout);
listView=(ListView)findViewById(R.id.drawerList);
MyAdapter=new MyAdapter(this);
listView.setAdapter(MyAdapter);
listView.setOnItemClickListener(this);
drawerListener= new ActionBarDrawerToggle(this, drawerLayout,
R.drawable.listmenu,
R.string.drawer_open, R.string.drawer_close){
@Override
public void onDrawerClosed(View drawerView) {
// TODO Auto-generated method stub
super.onDrawerClosed(drawerView);
}
@Override
public void onDrawerOpened(View drawerView) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, " Drawer Opened ",
Toast.LENGTH_SHORT).show();
}
};
drawerLayout.setDrawerListener(drawerListener);
getActionBar().setHomeButtonEnabled(true);
getActionBar().setDisplayHomeAsUpEnabled(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
if (drawerListener.onOptionsItemSelected(item))
{
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
// TODO Auto-generated method stub
super.onConfigurationChanged(newConfig);
drawerListener.onConfigurationChanged(newConfig);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onPostCreate(savedInstanceState);
drawerListener.syncState();
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
}
public void selectItem(int position) {
listView.setItemChecked(position, true);
}
public void setTitle(String title)
{
getActionBar().setTitle(title);
class MyAdapter extends BaseAdapter {
private Context context;
String[] planets;
int[] images = { R.drawable.home, R.drawable.workout, R.drawable.week,
R.drawable.gallery, R.drawable.statistics, R.drawable.settings};
public MyAdapter(Context context) {
this.context=context;
planets=context.getResources().getStringArray(R.array.planets);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return planets.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return planets[position];
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View row =null;
if (convertView==null)
{
LayoutInflater inflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row=inflater.inflate(R.layout.custom_row, parent, false);
}
else
{
row = convertView
}
row.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent((Activity) context, Workouts.class));
}
});
TextView titleTextView = (TextView) row.findViewById(R.id.textView1);
ImageView titleImageView = (ImageView) row.findViewById(R.id.imageView1);
titleTextView.setText(planets[position]);
titleImageView.setImageResource(images[position]);
return row;
}
}
}
您可以根據位置傳遞給不同的活動。
row.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Switch(position){
case 0:
//startActivity 1
break;
case 1:
//startActivity 2
break;
/**** continue **********/
}
}
});
==>在您的MainActivity中替換以下代碼
public class MainActivity extends Activity implements OnItemClickListener {
private DrawerLayout drawerLayout;
private ListView listView;
private ActionBarDrawerToggle drawerListener;
private MyAdapter MyAdapter;
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawerLayout=(DrawerLayout) findViewById(R.id.drawerLayout);
listView=(ListView)findViewById(R.id.drawerList);
MyAdapter=new MyAdapter(this);
listView.setAdapter(MyAdapter);
listView.setOnItemClickListener(this);
drawerListener= new ActionBarDrawerToggle(this, drawerLayout,
R.drawable.listmenu,
R.string.drawer_open, R.string.drawer_close){
@Override
public void onDrawerClosed(View drawerView) {
// TODO Auto-generated method stub
super.onDrawerClosed(drawerView);
}
@Override
public void onDrawerOpened(View drawerView) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, " Drawer Opened ",
Toast.LENGTH_SHORT).show();
}
};
drawerLayout.setDrawerListener(drawerListener);
getActionBar().setHomeButtonEnabled(true);
getActionBar().setDisplayHomeAsUpEnabled(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
if(drawerListener.onOptionsItemSelected(item))
{
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
// TODO Auto-generated method stub
super.onConfigurationChanged(newConfig);
drawerListener.onConfigurationChanged(newConfig);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onPostCreate(savedInstanceState);
drawerListener.syncState();
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
if (position == 0) {
startActivity(new Intent((Activity) context, A.class));
}
if (position == 1) {
startActivity(new Intent((Activity) context, B.class));
}
if (position == 2) {
startActivity(new Intent((Activity) context, C.class));
}
if (position == 3) {
startActivity(new Intent((Activity) context, D.class));
}
if (position == 4) {
startActivity(new Intent((Activity) context, E.class));
}
if (position == 5) {
startActivity(new Intent((Activity) context, F.class));
}
if (position == 6) {
startActivity(new Intent((Activity) context, G.class));
}
if (position == 7) {
startActivity(new Intent((Activity) context, H.class));
}
if (position == 8) {
startActivity(new Intent((Activity) context, I.class));
}
}
public void selectItem(int position) {
listView.setItemChecked(position, true);
}
public void setTitle(String title)
{
getActionBar().setTitle(title);
}
class MyAdapter extends BaseAdapter {
private Context context;
String[] planets;
int[] images = { R.drawable.home, R.drawable.workout, R.drawable.week,
R.drawable.gallery, R.drawable.statistics, R.drawable.settings};
public MyAdapter(Context context) {
this.context=context;
planets=context.getResources().getStringArray(R.array.planets);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return planets.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return planets[position];
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View row =null;
if(convertView==null)
{
LayoutInflater inflater=(LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row=inflater.inflate(R.layout.custom_row, parent, false);
}
else
{
row=convertView;
}
TextView titleTextView=(TextView) row.findViewById(R.id.textView1);
ImageView titleImageView= (ImageView) row.findViewById(R.id.imageView1);
titleTextView.setText(planets[position]);
titleImageView.setImageResource(images[position]);
return row;
}
}
}
在MainActivity
刪除OnItemClickListener
的實現,並使用匿名類。 替換listView.setOnItemClickListener(this);
有了這個:
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
switch (position) {
case 0:
startActivity(new Intent((Activity) context, Activity0.class));
break;
case 1:
startActivity(new Intent((Activity) context, Activity1.class));
break;
case 2:
startActivity(new Intent((Activity) context, Activity2.class));
break;
// etc.
}
});
通過覆蓋onItemClick
的OnItemClickListener
通過position
選擇目標類:
@Override
public void onItemClick(View view, int position) {
switch(position){
case 0:
startActivity(new Intent(MainActivity.this, A.class));
break;
case 1:
startActivity(new Intent(MainActivity.this, B.class));
break;
default:
break;
}
}
更重要的是,您必須定義從position
到target class
的映射。
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