如何在同一视图中启动子活动？

Question

我想在当前视图中开始新的活动目的！我该怎么做？

Answer 1

一个伟大的搜索后，我得到它。我以这种方式放置我的第一个布局！

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 

    <LinearLayout android:id="@+id/contentViewLayout" 
     android:orientation="vertical" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:background="@color/white" 
     android:layout_marginBottom="56dip"/> 

     <HorizontalScrollView 
      android:scrollbarSize="2dip" 
      android:layout_alignParentBottom="true" 
      android:layout_width="fill_parent" 
      android:background="@drawable/background" android:layout_height="56dip"> 

    </HorizontalScrollView> 
</RelativeLayout> 

当我在它启动新的活动我用follwing代码...

public class MainActivityWithTabbar extends ActivityGroup implements OnClickListener{ 

    public LocalActivityManager activityManager; 
    public LinearLayout contentViewLayout; 
    public LinearLayout.LayoutParams contentViewLayoutParams; 
    private Context context; 
    public Intent nextActivit; 

    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     context = this; 
     activityManager = getLocalActivityManager(); 
     setContentView(R.layout.mainActivityLayout); 
     contentViewLayout = (LinearLayout)findViewById(R.id.contentViewLayout); 
     contentViewLayoutParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT); 

     nextActivit = new Intent(this, NextActivity.class); 
     startGroupActivity("activity1", nextActivit); 

    } 

    public void startGroupActivity(String id, Intent intent) 
    { 
     contentViewLayout.removeAllViews(); 

     View view = activityManager.startActivity(id, intent).getDecorView(); 
     contentViewLayout.addView(view, contentViewLayoutParams); 
    } 
} 

所以它workssss这种情况下....

Answer 2

您是指视图中包含的活动？你不能那样做。视图包含可见元素，活动用于运行程序代码。

如果您的意思是通过与视图交互来开始新的活动，就像用户点击按钮一样，您需要实现一个onClick（）方法，并从那里开始活动。

layout.xml 
... 
android:onClick="onButton" 

MyActivity.java 
... 
public void onButton(View v) { 
    Intent i = new Intent(mCtx, OtherActivity.class); 
    startActivityForResult(i, OPTION); 
}