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我試圖通過編程添加一些控件並設置動態添加的控件的位置。在Android上動態添加視圖和定位
我的佈局文件：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/loginView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/myappappbackground1920"
tools:context=".MyAppLoginActivity" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="0dp"
android:layout_marginTop="0dp"
android:contentDescription="@string/app_name"
android:src="@drawable/loginheader1920" />
<EditText
android:id="@+id/txtEmailLogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/imageView1"
android:layout_marginLeft="39dp"
android:background="@android:color/white"
android:ems="14"
android:hint="@string/hint_email_or_username"
android:inputType="textEmailAddress"
android:minHeight="35dp"
android:padding="5dp"
android:textColor="@color/textbox_color"
android:textColorHint="@color/textbox_color"
android:textSize="@dimen/textbox_font_size" >
<requestFocus />
</EditText>
<EditText
android:id="@+id/txtPasswordLogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/txtEmailLogin"
android:layout_alignParentLeft="true"
android:layout_below="@+id/imageView1"
android:layout_marginLeft="39dp"
android:layout_marginTop="45dp"
android:background="@android:color/white"
android:ems="14"
android:hint="@string/hint_password"
android:inputType="textPassword"
android:minHeight="35dp"
android:padding="5dp"
android:textColor="@color/textbox_color"
android:textColorHint="@color/textbox_color"
android:textSize="@dimen/textbox_font_size" >
</EditText>
<ImageButton
android:id="@+id/btnWatchTutorialLogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="0dp"
android:background="#00000000"
android:contentDescription="@string/app_name"
android:scaleType="center"
android:src="@drawable/watchtutoriallogin1920" />
<ImageButton
android:id="@+id/btnExecuteLogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/txtPasswordLogin"
android:layout_below="@+id/txtPasswordLogin"
android:layout_marginTop="7dp"
android:background="#00000000"
android:contentDescription="@string/btn_login"
android:src="@drawable/btnloginloginview1920" />
<TextView
android:id="@+id/lnkForgotPassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/txtPasswordLogin"
android:layout_below="@+id/btnExecuteLogin"
android:layout_marginTop="28dp"
android:text="@string/lnk_forgot_password"
android:textColor="@color/white"
android:textSize="@dimen/textbox_font_size" />
<ImageButton
android:id="@+id/btnBackLogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/btnExecuteLogin"
android:layout_alignLeft="@+id/txtPasswordLogin"
android:background="#00000000"
android:src="@drawable/btnback_login_1920" android:contentDescription="@string/lnk_back"/>
，我使用添加和位置控制的代碼是：
private void AddItems() {
final Context context = getApplicationContext();
RelativeLayout layout = (RelativeLayout)findViewById(R.id.loginView);
RelativeLayout.LayoutParams p0 = new RelativeLayout.LayoutParams(layout.getLayoutParams());
RelativeLayout.LayoutParams p1 = new RelativeLayout.LayoutParams(layout.getLayoutParams());
RelativeLayout.LayoutParams p2 = new RelativeLayout.LayoutParams(layout.getLayoutParams());
p0.topMargin = 20;
p0.leftMargin = 0;
p0.width = 1280;
p0.height = 135;
p1.width = 62;
p1.height = 64;
p1.topMargin = 10;
p1.leftMargin =10;
p2.topMargin = 10;
p2.leftMargin = 30;
ImageView iView0 = new ImageView(context);
iView0.setId(1);
iView0.setImageResource(R.drawable.semi_transparent_bar);
iView0.setLayoutParams(p0);
ImageView iView1 = new ImageView(context);
iView1.setId(2);
iView1.setImageResource(R.drawable.icon_info);
iView1.setLayoutParams(p1);
TextView tView = new TextView(context);
tView.setId(3);
tView.setTextColor(getResources().getColor(R.color.white));
tView.setText("This is a test message.");
tView.setLayoutParams(p2);
this.addContentView(iView0, p0);
this.addContentView(iView1, p1);
this.addContentView(tView, p2);
}
控件添加到用戶界面，但他們忽略了左，頂級屬性。如果有人能幫我弄清楚問題出在哪裏，我將不勝感激。