我想使用代码给EditText 修改marginTop 。
我设置了 setLayoutParams 但是获得 ForceClose 和下面的信息：
06-20 14:53:59.715: ERROR/AndroidRuntime(913): java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams
06-20 14:53:59.715: ERROR/AndroidRuntime(913): at android.widget.RelativeLayout$DependencyGraph.findRoots(RelativeLayout.java:1291)
06-20 14:53:59.715: ERROR/AndroidRuntime(913): at android.widget.RelativeLayout$DependencyGraph.getSortedViews(RelativeLayout.java:1238)
06-20 14:53:59.715: ERROR/AndroidRuntime(913): at android.widget.RelativeLayout.sortChildren(RelativeLayout.java:279)
06-20 14:53:59.715: ERROR/AndroidRuntime(913): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:299)
06-20 14:53:59.715: ERROR/AndroidRuntime(913): at android.view.View.measure(View.java:7964)
谁能解释一下然后再该怎么做？
giveuser = (EditText) findViewById(R.id.txt_username);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(5,5,5,5);
giveuser.setLayoutParams(lp);
xml :
<EditText android:id="@+id/txt_username"
android:layout_height="wrap_content" android:layout_width="350px"
android:layout_centerHorizontal="true" android:layout_below="@+id/loginsubtitle"
android:layout_marginTop="180dip" android:singleLine="true"
android:hint="Identifiant" />
