我想用可点击的元素填充ListView。现在我有一个TextView，但我不能点击每个项目，因为它是一个追加。我能怎么做？我希望看到带有可点击元素的ListView。现在它将开启一个祝酒词。这是代码：
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.choice);
properties_container = (LinearLayout ) findViewById(R.id.properties_container);
String host = (String) InitJadeProperties.retrieve(this, getString(R.string.main_container_host), getString(R.string.default_host));
String port = (String) InitJadeProperties.retrieve(this, getString(R.string.main_container_port), getString(R.string.default_port));
wfsTv=(TextView)findViewById(R.id.wfsTv);
ListView wfsLv = (ListView)findViewById(R.id.wfsLv);
db=new MyDatabase(getApplicationContext());
db.open(); //apriamo il db
if(db.fetchWfs().getCount()==0){//inserimento dati, solo se il db è vuoto
db.insertWf("WF1", "class1");
db.insertWf("WF2", "class2");
db.insertWf("WF3", "class3");
db.insertWf("WF4", "class4");
db.insertWf("WF5", "class5");
}
c=db.fetchWfs(); // query
startManagingCursor(c);
SimpleCursorAdapter adapter=new SimpleCursorAdapter( //semplice adapter per i cursor
this,
R.layout.wfs, //il layout di ogni riga/prodotto
c,
new String[]{MyDatabase.WfMetaData.ID,MyDatabase.WfMetaData.WF_NAME_KEY,MyDatabase.WfMetaData.WF_CLASS_KEY},//questi colonne
new int[]{R.id.IDTv,R.id.nameTv,R.id.classTv});//in queste views
wfsLv.setAdapter(adapter); //la listview ha questo adapter
adapter.notifyDataSetChanged();
//qui vediamo invece come reperire i dati e usarli, in questo caso li stampiamo in una textview
int nameCol=c.getColumnIndex(MyDatabase.WfMetaData.WF_NAME_KEY); //indici delle colonne
int classCol=c.getColumnIndex(MyDatabase.WfMetaData.WF_CLASS_KEY);
if(c.moveToFirst()){ //se va alla prima entry, il cursore non è vuoto
do {
wfsTv.append("Wf Name:"+c.getString(nameCol)+", Class:"+c.getString(classCol)+"\n"); //estrazione dei dati dalla entry del cursor
} while (c.moveToNext());//iteriamo al prossimo elemento
}
db.close();
getWindow().setFormat(PixelFormat.RGBA_8888); //visto che usiamo i gradient, usiamo questo trick (vedi snippet forum)
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DITHER);
//wfsLv.setBackgroundDrawable(new GradientDrawable(GradientDrawable.Orientation.BOTTOM_TOP, new int[]{Color.RED,Color.parseColor("#f2bf26")}));
//wfsTv.setBackgroundDrawable(new GradientDrawable(GradientDrawable.Orientation.TOP_BOTTOM, new int[]{Color.RED,Color.parseColor("#f2bf26")}));
//definizione ed uso di gradient in modo programmatico
//animazioni in modo programmatico (vedi snippet forum)
Animation a1 = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_PARENT, 1.0f, Animation.RELATIVE_TO_SELF, 0.0f);
a1.setDuration(1000);
a1.setInterpolator(AnimationUtils.loadInterpolator(this, android.R.anim.decelerate_interpolator));
wfsLv.startAnimation(a1);
//entra da sotto
Animation a2 = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_PARENT, -1.0f, Animation.RELATIVE_TO_SELF, 0.0f);
a2.setDuration(1000);
a2.setInterpolator(AnimationUtils.loadInterpolator(this, android.R.anim.decelerate_interpolator));
wfsTv.startAnimation(a2);
//entra da sopra
wfsTv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CharSequence text = "Workflow scelto!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(getApplicationContext(), text, duration);
toast.show();
}
});
wfsLv.setClickable(true);
//e affidiamo la gestione del tap/click ad un apposito listener, che ci permetterà di agire sull’elemento cliccato e ricaricare la nostra lista
wfsLv.setOnItemClickListener
(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent,
View v, int position, long id) {
//TextView txtId = (TextView)v.findViewById(R.id.wfsTv);
if(position == 0){
CharSequence text = "Workflow scelto!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(getApplicationContext(), text, duration);
toast.show();
c.requery();
}}
});
//adapter.notifyDataSetChanged();
/*wfsTv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CharSequence text = "Workflow scelto!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(getApplicationContext(), text, duration);
toast.show();
}
});*/
TextView masterTv = (TextView)findViewById(R.id.masterTv);
masterTv.setText("Master");
masterTv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startSubActivity();
}
});
}
private void startSubActivity(){
Intent intent = new Intent(this, ConfigChoice.class);
startActivity(intent);
}
这是我的xml代码：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Scegli il Workflow da testare:"
android:gravity="center" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Workflow di default" />
<TextView
android:id="@+id/masterTv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Master" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Nuovi Workflow" />
<TextView
android:id="@+id/wfsTv"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="20dp"
android:textStyle="bold"
android:onClick=""
android:padding="20dp"
android:paddingBottom="10dp"/>
<ListView
android:id="@+id/wfsLv"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:dividerHeight="0dp"
></ListView>
</LinearLayout>
我有一个Textview和一个ListView ..但是我只想要一个ListView并且在每一行中都修改了一个TextView ..没有2个东西分开..就像这个代码..
答案 0 :(得分：0)
尝试此而不是SimpleCursorAdapter。因此，请将SimpleCursorAdapter adapter = ...替换为MyAdapter adapter = new MyAdapter(this);
这是适配器：
public class MyAdapter extends BaseAdapter {
private Activity thisContext = null;
private ArrayList<String> myList = null;
/**
* MyAdapter Constructor.
* @param c Context
*/
public MyAdapter(Activity c) {
this.myList = new ArrayList<String>();
this.thisContext = c;
String host = (String) InitJadeProperties.retrieve(this, getString(R.string.main_container_host), getString(R.string.default_host));
String port = (String) InitJadeProperties.retrieve(this, getString(R.string.main_container_port), getString(R.string.default_port));
db=new MyDatabase(getApplicationContext());
db.open(); //apriamo il db
if(db.fetchWfs().getCount()==0){//inserimento dati, solo se il db è vuoto
db.insertWf("WF1", "class1");
db.insertWf("WF2", "class2");
db.insertWf("WF3", "class3");
db.insertWf("WF4", "class4");
db.insertWf("WF5", "class5");
}
c=db.fetchWfs(); // query
startManagingCursor(c);
int nameCol=c.getColumnIndex(MyDatabase.WfMetaData.WF_NAME_KEY); //indici delle colonne
int classCol=c.getColumnIndex(MyDatabase.WfMetaData.WF_CLASS_KEY);
if(c.moveToFirst()){ //se va alla prima entry, il cursore non è vuoto
do {
myList.add("Wf Name:"+c.getString(nameCol)+", Class:"+c.getString(classCol)); //estrazione dei dati dalla entry del cursor
} while (c.moveToNext());//iteriamo al prossimo elemento
}
db.close();
} //End MyAdapter()
public int getCount() {
return myList.size();
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
/**
* Create a new View for each item referenced by the Adapter.
* @return The View created.
*/
public View getView(final int position, View convertView, ViewGroup parent) {
//Layout inflated from XML
LayoutInflater inflater = context.getLayoutInflater();
View MyView = inflater.inflate(R.layout.wfsTv_item, null, true);
//Text to be shown in list
TextView wfsTv = (TextView) MyView.findViewById(R.id.wfsTv);
wfsTv.setText(myList.get(position));
MyView.setClickable(true);
//Set the click action for the list
MyView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
CharSequence text = "Workflow scelto!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(thisContext, text, duration);
toast.show();
}
}); //End setOnClickListener()
return MyView;
} //End getView()
}
布局XML文件wfsTv_item.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/wfsTv"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="20dp"
android:textStyle="bold"
android:onClick=""
android:padding="20dp"
android:paddingBottom="10dp"/>
</LinearLayout>
我没有对此进行测试，因此可能存在一些问题。此外，您可以更改布局并添加任意数量的内容。请注意，OnClickListener仅适用于项目，而不适用于项目的各个子项（如果有）。