使用视图膨胀多次 [英] Use view to inflate multiple times

问题描述

我有一些问题，关于膨胀和相同的TextView重新使用。结果
它喜欢它试图一遍又一遍地覆盖​​相同的TextView或东西，它不能做到这一点？

I have a some problem regarding inflating and re-using the same TextView.
Its like its trying to overwrite the same textview over and over again or something and it cant do that?

LayoutInflater inflater = LayoutInflater.from(this);
View mainlayout = inflater.inflate(R.layout.days_monday_inflate, null);
View layout_number = inflater.inflate(R.layout.inflate_number, null);

for (int i = 0; i < 10; i++) {
    row = new TableRow(this);
    number = (TextView) layout_number.findViewById(R.id.Number);
    number.setTag(i);
    number.setText(Integer.toString(i));
    row.addView(number);
}
setContentView(mainlayout);

下面是inflate_number.xml

Here is the inflate_number.xml

<TextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/Number"
    android:layout_width="3dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center|bottom"
    android:text="1" />

这是错误即时得到其上排：51，这就是：
row.addView（数字）;

This is the error im getting and its on row: 51, which is: row.addView(number);

07-18 20:54:25.124: E/AndroidRuntime(1166): Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
07-18 20:54:25.124: E/AndroidRuntime(1166):     at android.view.ViewGroup.addViewInner(ViewGroup.java:1970)
07-18 20:54:25.124: E/AndroidRuntime(1166):     at android.view.ViewGroup.addView(ViewGroup.java:1865)
07-18 20:54:25.124: E/AndroidRuntime(1166):     at android.view.ViewGroup.addView(ViewGroup.java:1822)
07-18 20:54:25.124: E/AndroidRuntime(1166):     at android.view.ViewGroup.addView(ViewGroup.java:1802)
07-18 20:54:25.124: E/AndroidRuntime(1166):     at com.trainingschedule.days.Monday.onCreate(Monday.java:50)
07-18 20:54:25.124: E/AndroidRuntime(1166):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-18 20:54:25.124: E/AndroidRuntime(1166):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)

推荐答案

你从来没有真正加入任何浏览到您的活动。您正在创建新的TableRows和添加TextViews给他们，但你从来没有添加行到任何东西。假设你在 R.layout.days_monday_inflate A TableLayout，你应该首先得到该视图（ TableLayout布局=（TableLayout参考）mainLayout.findViewById （R.id.my_table_layout_id）），然后每行添加到TableLayout：

You're never actually adding any Views to your Activity. You're creating new TableRows and adding TextViews to them, but you're never adding the rows to anything. Assuming you have a TableLayout in R.layout.days_monday_inflate, you should first get a reference to that view (TableLayout layout = (TableLayout)mainLayout.findViewById(R.id.my_table_layout_id)) and then add each row to that TableLayout:

TableLayout layout = (TableLayout)mainLayout.findViewById(R.id.my_table_layout_id);

for(int i = 0; i < 10; i++) {
    row = new TableRow(this);
    View layout_number = inflater.inflate(R.layout.inflate_number, layout, false);
    TextView number = (TextView) layout_number.findViewById(R.id.Number);
    number.setTag(i);
    number.setText(Integer.toString(i));
    row.addView(number);
    layout.addView(row);
}

虽然我会建议，如果可能的话完全设置您的布局XML，除非根据需要动态。另外，如果你只需要添加每行一个TextView的，你就要去只使用一个更好的LinearLayout，我建议。

Although I would recommend setting up your layout fully in XML if at all possible, unless needed dynamically. Also, if you're only adding one TextView per row, you're better off just using a LinearLayout, I would suggest.

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