Question

我不知道如何在以编程方式创建的线性布局中获取商品的ID。我想“捕获”按钮的正确ID，并将其与字段相关联。

LinearLayout layout = (LinearLayout)  findViewById(R.id.content_doodle_linearlayout3);
    layout.setOrientation(LinearLayout.VERTICAL);  


    String[] data = {"1","2","3","4"};
    String[] users = {"1","2","3"};


 for (int i = 0; i < users.length; i++) {
        row = new LinearLayout(this);
        row.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));

        text = new TextView(this);
        text.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
        text.setText("Name " + (i));
        text.setId(1000 + i);

        row.addView(text);
        int ergebnis = -1;
        for (int j = 0; j < daten.length; j++) {
            CheckBox btnTag = new CheckBox(this);
            btnTag.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
            //btnTag.setText("Button " + (j + 1 + (i * 4)));
            btnTag.setId(j + 1 + (i * 4));

            row.addView(btnTag);
        }

        layout.addView(row);
    }

找不到按钮，因为“没有”（R.id. {XML-Field}）。我如何从特定行中“找到”单击的按钮。我必须对每个按钮进行编码吗？

Answer 1

您可以通过以下方式为布局中的每个子视图设置指定的标签：

View childView = ...;
childView.setTag("Some tag");

然后在您的onClickListener中：

child.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        Object tag = view.getTag();
        if (tag instanceof String) {
            String stringTag = (String) tag;
            if (stringTag.equals("Some tag") {
                // do something
            }
        }
    }
});

如何从程序化线性布局项目中获取ID

1 个答案: