Question

我的纽子派了一个参数。

<Button
    android:id="@+id/tela1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Chinese Day"
    android:onClick="loadPage"
    android:tag="page1"
    />

我的职能应当利用这一参数来装载第1页的活动。

public void loadPage(View view) {
    String page = (String) view.getTag();                
    setContentView(R.layout.page);
}

How to make this work?

Tks

Answer 1

You want to specify in the button s tag the name of the layout, right? Try the following:

String page = (String) view.getTag();  
int layoutId= getResources().getIdentifier(page, "layout", getPackageName());          
setContentView(layoutId);

希望这一帮助。

Answer 2

页: 1 贾瓦思思·普兰特。

每项活动都在<代码>R.layout内进行分类。您只需要查询<代码>R.layout内的特性,然后将其分类价值带入<代码>。

try {
    String tag = (String) btn.getTag(); // Button in variable "btn"

    Class<R.layout> cls = R.layout.class;
    Field field = cls.getDeclaredField(tag);

    Integer obj = (Integer) field.get(null); // You could do these two in one line
    int value = obj.intValue();

    Log.i("Test", "Actvity id code = " + obj.toString()); // Testing code
    setContentView(value);
}
catch (Exception e) {
    e.printStackTrace();
    return;
}

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