我绘制桌面,然后是桌子。在每个表格单元格中我都有TextView,那么当用户点击它时,如何获取它的ID或其他数字呢?
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TableLayout lTableLayout;
lTableLayout = (TableLayout) findViewById(R.id.tbLayout);
/*Draw table top*/
TableRow trTop = new TableRow(this);
trTop.setPadding(0, 5, 0, 0);
trTop.setBackgroundColor(Color.rgb(102, 178, 255));
lTableLayout.addView(trTop, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
String[] str = new String[]{"Time", "Room1", "Room2"};
for(int j=0; j<3; j++){
TextView tv1 = new TextView(this);
tv1.setPadding(2, 2, 2, 2);
tv1.setTextSize(14);
tv1.setText(str[j]);
trTop.addView(tv1,LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
}
/*Draw table body*/
for(int i=0; i<5; i++){
final TableRow tr1 = new TableRow(this);
tr1.setPadding(0, 5, 0, 0);
if((i%2) == 0)
tr1.setBackgroundColor(Color.WHITE);
lTableLayout.addView(tr1, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
for(int j=0; j<3; j++){
final TextView tv1 = new TextView(this);
tv1.setPadding(2, 2, 2, 2);
tv1.setTextSize(12);
if(j==0){
tv1.setText(8+i + ":00");
}else{
tv1.setText("reserved");
}
tr1.addView(tv1,LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
tv1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Toast.makeText(getApplicationContext(), "id = " + tv1.getId(),
Toast.LENGTH_LONG).show();
Log.e("TAG", " clicked ID: " + tr1.getId());
}
});
}
}
我在这里寻找id:
public void onClick(View arg0) {
Toast.makeText(getApplicationContext(), "id = " + tv1.getId(),
Toast.LENGTH_LONG).show();
Log.e("TAG", " clicked ID: " + tr1.getId());
}
});
但TOAST说:&#34; id = -1&#34;对于每个textview。
答案 0 :(得分:0)
public void onClick(View arg0) {
Toast.makeText(getApplicationContext(), "id = " + tv1.getId(),
Toast.LENGTH_LONG).show();
Log.e("TAG", " clicked ID: " + tr1.getId());
}
});
好像你希望得到一个带有 tv1 .getId()的log.e(),并且它说 tr1 .getId(),所以你&& #39;获取表行Id而不是TextView Id。尝试将tr1更改为tv1并告诉我它是否有效。
编辑:
每次创建文本视图和表格行时,请使用tr1.setId(i)
和tv1.setId(j)
手动为其分配ID。它应该有用。