[英]How to get onClickListener for Android array of buttons to work
I have created a dynamic array of buttons that come from sqllite database. 我创建了一个来自sqllite数据库的按钮动态数组。 For the life of me I cannot get a click listener set up to address each button individually.
我一生都无法设置点击侦听器来分别处理每个按钮。 I have been searching for 3 hours with no success at all.
我一直在寻找3个小时但没有成功。
Any help would be appreciated. 任何帮助,将不胜感激。 Don't worry about the database crap, it's just the listener.
不用担心数据库废话,它只是侦听器。
imports...
public class CreatePlayList extends Activity {
ScrollView scrollleft, scrollright;
LinearLayout songsright, songsleft;
TextView testtext;
String[][] allsongs;
int numofsongs, i;
Button b1[];
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.createplaylist);
scrollleft = (ScrollView) findViewById(R.id.scrollleft);
scrollright = (ScrollView) findViewById(R.id.scrollright);
songsright = (LinearLayout) findViewById(R.id.layRight);
songsleft = (LinearLayout) findViewById(R.id.layLeft);
LyricDb connect = new LyricDb(CreatePlayList.this);
connect.open();
numofsongs = connect.getNumSongs();
b1 = new Button[(numofsongs)];
allsongs = new String[numofsongs][2];
allsongs = connect.getSongArray();
connect.close();
testtext = new TextView(this);
testtext.setText("Test");
songsleft.addView(testtext);
for (i = 0; i < allsongs.length; i++) {
b1[i] = new Button(this);
b1[i].setText(allsongs[i][1]);
songsright.addView(b1[i]);
}
b1[19].setText("test 123");
createClic();
}
public void createClic(){
for (i = 0; i < (allsongs.length - 1); i++) {
b1[i].setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
testtext.setText(b1[i].getText());
}
});
}
}
}
Dump the 'i' declared at class level. 转储在班级声明的'i'。 Replace method with this (the "Button theButton" needs to stay 'final').
用这个替换方法(“按钮theButton”需要保持'最终')。
public void createClic()
{
for (int i = 0; i < (allsongs.length - 1); i++)
{
final Button theButton = b1[i];
theButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
// TODO Auto-generated method stub
testtext.setText(theButton.getText());
}
});
}
}
First implement OnClickListener in your Activity and call setOnClickListener() method to all of your buttons when you are creating it. 首先在Activity中实现OnClickListener,并在创建时将setOnClickListener()方法调用到所有按钮。
b[i].setOnClickListener(this);
and also set id with each button
b[i].setId(i);
//and override this method
@Override
public void onClick(View v)
{
//here check which button called
if(v.getId==1)
{
//its Button 1 do what ever u want
}
if(v.getId==2)
{
//its Button 2 do what ever u want its Button 2
}
......
}
Try it once... 尝试一次......
b1[i] = new Button[allsongs.length];
for (i = 0; i < allsongs.length; i++) {
b1[i].setText(allsongs[i][1]);
songsright.addView(b1[i]);
}
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