java.lang.IllegalStateException
1.The specified child already has a parent. You must call removeView() on the child's parent first。
该异常意思是说:这个特定的子控件(chlidView)已经拥有了一个父控件(parentView)。你需要首先调用父控件的removeView()。
例如: 在onCreate()中
rl = (RelativeLayout) findViewById(R.id.myrl); rl.removeAllViews(); rl.addView(LockSDK.getInstance().getView(this), RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
public View getView(Context context) { if (v == null) { v = new LockView(context); v.setAppContext(appcontext); } return v; }
此时getView()获取的子控件的生命周期与父控件rl不同,因此rl.removeAllViews();没起到应有的用途。可以替换为
rl = (RelativeLayout) findViewById(R.id.myrl); View view = LockSDK.getInstance().getView(this); ViewGroup parent = (ViewGroup) view.getParent(); if (parent != null) { parent.removeAllViews(); } rl.addView(view, RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);