Question

android linearlayout动态添加view 怎么清空

Answer 1

private LinearLayout layout;
private TextView textView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
layout = new LinearLayout( this ); // 变量layout是该Activity的成员变量（private LinearLayout layout）
layout.setOrientation( LinearLayout.VERTICAL ); // 设置layout布局方向为垂直
setContentView( layout );

// 接下来向layout中添加TextView
textView = new TextView( this );
textView.setText( "This Is a TextView" );
layout.addView( textView );
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
layout.removeView(textView);
super.onResume();
}

}

但是Activity在启动的时候调用onCreate()之后也会调用onResume()方法，所以进入程序也看不到textview