Java 在每个项目上创建一个带有onClick侦听器的列表
我有一个Java 在每个项目上创建一个带有onClick侦听器的列表,java,android,Java,Android,我有一个SQLitedb，我想在列表视图中查看所有元素。但我想让每一行都可以点击。如何做到这一点？代码如下： 然后。。另一个问题。。我有一个活动可以通过选项菜单启动，它可以从数据库中添加或删除数据。。我想在返回此活动时自动更新列表。。如何更改代码 public class WorkflowChoice extends Activity { private static final int INIT_JADE_PROFILE = 0; private static final in
SQLitepublic class WorkflowChoice extends Activity
{
private static final int INIT_JADE_PROFILE = 0;
private static final int MANAGE_DATABASE = 1;
private static final int MODIFY_FILES = 2;
private static final int CHANGE_THEME = 3;
private static final int SHOW_OUTPUT_WORKFLOW = 4;
private LinearLayout properties_container;
private MyDatabase db;
TextView wfsTv;
ListView wfsLv;
private Cursor c;
public MyDatabase getDb()
{
return db;
}
@Override 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 //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 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);
c.requery();
}
}
);
/*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);
}
}
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.choice）；
properties\u container=（LinearLayout）findViewById（R.id.properties\u 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_容器_port），getString（R.String.default_port））；
wfsTv=（TextView）findViewById（R.id.wfsTv）；
ListView wfsLv=（ListView）findViewById（R.id.wfsLv）；
db=新的MyDatabase（getApplicationContext（））；
db.open（）；//Aprio il db
如果（db.fetchWfs（）
db.insertWf（“WF1”、“class1”）；
db.insertWf（“WF2”，“class2”）；
db.insertWf（“WF3”，“class3”）；
db.insertWf（“WF4”，“class4”）；
db.insertWf（“WF5”、“class5”）；
}
c=db.fetchWfs（）；//查询
开始管理光标（c）；
SimpleCursorAdapter=新的SimpleCursorAdapter（//semplice adapter per i cursor
这
R.layout.wfs，//il layout di ogni riga/prodotto
C
新字符串[]{MyDatabase.WfMetaData.ID，MyDatabase.WfMetaData.WF_NAME_KEY，MyDatabase.WfMetaData.WF_CLASS_KEY}，//questi colonne
新建int[]{R.id.IDTv，R.id.nameTv，R.id.classTv}）；//在queste视图中
wfsLv.setAdapter（适配器）；//la listview ha questo适配器
adapter.notifyDataSetChanged（）；
//在《联合国文本视图》中的《我和你的故事》中，我听到了一段视频
int nameCol=c.getColumnIndex（MyDatabase.WfMetaData.WF_NAME_KEY）；//indici delle colonne
int classCol=c.getColumnIndex（MyDatabase.WfMetaData.WF_CLASS_KEY）；
如果（c.moveToFirst（））{//se va alla prima entry，il cursore nonèvooto
做{
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（视频片段论坛）
getWindow（）.addFlags（WindowManager.LayoutParams.FLAG_抖动）；
//wfsLv.setBackgroundDrawable（新的GradientDrawable（GradientDrawable.Orientation.BOTTOM_-TOP，新的int[]{Color.RED，Color.parseColor（#f2bf26”）}）；
//wfsTv.setBackgroundDrawable（新的GradientDrawable（GradientDrawable.Orientation.TOP_-BOTTOM，新的int[]{Color.RED，Color.parseColor（“#f2bf26”）}）；
//在modo程序中定义uso di梯度
//modo programmatico中的animazioni（视频片段论坛）
Animation a1=新的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.设定持续时间（1000）；
a1.setInterpolator（AnimationUtils.loadInterpolator（这个是android.R.anim.Decreate_interpolator））；
wfsLv.startAnimation（a1）；
//索托中心酒店
Animation a2=新的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.设定持续时间（1000）；
a2.setInterpolator（AnimationUtils.loadInterpolator（这个是android.R.anim.decreate_interpolator））；
wfsTv.startAnimation（a2）；
//索普拉中心酒店
wfsLv.setClickable（真）；
//点击/点击按钮的位置与听众的位置一致，点击按钮的位置与听众的位置一致
wfsLv.setOnItemClickListener
（新AdapterView.OnItemClickListener（）{
公共无效MClick（AdapterView父级、，
视图v，内部位置，长id）{
//TextView txtId=（TextView）v.findViewById（R.id.wfsTv）；
CharSequence text=“工作流scelto！”；
int duration=Toast.LENGTH\u SHORT；
Toast Toast=Toast.makeText（getApplicationContext（），text，duration）；
toast.show（）；
c、 重新查询（）；
}
});
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
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);
CharSequence text = "Workflow scelto!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(getApplicationContext(), text, duration);
toast.show();
c.requery();
}
});
listview.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
//---> arg2 <-- will give you row number
// your code goes here
}
});
adapter.notifyDataSetChanged();