我有一个功能,可以动态生成特定数量的TextView。
TextView tv;
EditText et;
public TextView textViewGenerate(final Activity activity, String tag, Integer id) {
tv = new TextView(activity);
GradientDrawable gd = new GradientDrawable();
gd.setColor(0xFFFFFF);
gd.setCornerRadius(4);
gd.setStroke(1, 0xFF757575);
tv.setBackground(gd);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT,
1.0f
);
tv.setPadding(7, 9, 0, 0);
tv.setGravity(Gravity.START);
tv.setTextSize(22);
tv.setTag(tag);
tv.setId(id);
tv.setHint("Enter Module Serial Number");
//Click to launch camera
tv.setClickable(true);
tv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Intent intent = new Intent(ct, MctCameraActivity.class);
Intent intent = new Intent(activity, MctCameraActivity.class);
activity.startActivityForResult(intent, 1);
//ct.startActivity(intent);
//ToDo: finish receiving the data from the activityForResult
}
});
lp.setMargins(10, 0, 10, 0);
lp.setMarginStart(10);
lp.setMarginEnd(10);
tv.setLayoutParams(lp);
return tv;
}
}
onClick会启动另一个活动,该活动会加载相机以捕获条形码数据。在主要活动中,我使用
创建TextViews。 final LayoutElements le = new LayoutElements();
mainLayout = (LinearLayout)findViewById(R.id.mctScanPageMain);
for(int i = 0; i < 3; i++) {
mainLayout.addView(le.textViewGenerate(this, "NewID" + i, i));
}
onActivityResult返回来自摄像机活动的值,但问题在于,它将每个生成的TextView设置为具有相同的条形码编号(条形码编号作为字符串返回)。如何修改此内容,以便仅在onActivityResult中更改所选TextView的文本?
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == 1 && resultCode == RESULT_OK && data != null) {
String returnResult = data.getStringExtra("result");
for (int i=0; i < mainLayout.getChildCount(); i++){
TextView tv = (TextView) mainLayout.findViewWithTag("NewID"+i);
if(tv == null) {
break;
} else {
tv.setText(returnResult);
}
}
}
}
在TextView的单击侦听器中,您可以更改:
Intent intent = new Intent(activity, MctCameraActivity.class);
activity.startActivityForResult(intent, 1);
to
Intent intent = new Intent(activity, MctCameraActivity.class);
intent.putExtra("text_view_tag", tag);
activity.startActivityForResult(intent, 1);
然后将其发送回MctCameraActivity
的结果,因此可以在onActivityResult
和getStringExtra
中使用它。这样,您将知道开始活动的TextView标签。
或者,您可以使用传递给requestCode
的startActivityForResult
来区分文本视图。例如,为文本视图1传递请求代码1,为文本视图2传递请求代码2,等等,然后在requestCode
中使用此onActivityResult
。