我正在尝试在布局的中心和底部的framelayout中的图像上实现textview,如下所示:
http://developer.android.com/resources/articles/layout-tricks-merge.html
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="center"
android:src="@drawable/golden_gate" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="20dip"
android:layout_gravity="center_horizontal|bottom"
android:padding="12dip"
android:background="#AA000000"
android:textColor="#ffffffff"
android:text="Golden Gate" />
</FrameLayout>
我正在尝试以编程方式实现此功能但没有运气..我总是在左上角看到textview ..有人可以帮忙吗?这是我的代码:
FrameLayout frameLay = new FrameLayout(MainScreen.this);
LayoutParams layoutParamsFrame = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
frameLay.setLayoutParams(layoutParamsFrame);
LinearLayout.LayoutParams layoutParamsImage= new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
ImageView imageView= new ImageView(MainScreen.this);
imageView.setImageResource(R.drawable.movie);
imageView.setLayoutParams(layoutParamsImage);
TextView theText=new TextView(MainScreen.this);
theText.setText("GOLDEN Gate");
theText.setTextColor(Color.WHITE);
theText.setTypeface(Typeface.DEFAULT_BOLD);
LayoutParams layoutParamsText= new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
theText.setLayoutParams(layoutParamsText);
theText.setGravity(Gravity.CENTER_HORIZONTAL|Gravity.BOTTOM);
frameLay.addView(theText);
frameLay.addView(imageView);
答案 0 :(得分:7)
你需要做的就是让textview填充像
这样的父母LayoutParams layoutParamsText= new LayoutParams(LayoutParams.FILL__PARENT,
LayoutParams.FILL_PARENT);
当您将重力设置为textview时,它意味着您正在告诉textview将其子项放在何处。但由于你的textview只有文字的大小,所以重力不会显示出任何差异。所以只需让textview填充父级。
但我认为RelativeLayout比FrameLayout更适合这个。使用RelativeLayout这是它的外观
RelativeLayout rLayout = new RelativeLayout(this);
LayoutParams rlParams = new LayoutParams(LayoutParams.FILL_PARENT
,LayoutParams.FILL_PARENT);
rLayout.setLayoutParams(rlParams);
ImageView image= new ImageView(this);
image.setImageResource(R.drawable.icon);
image.setLayoutParams(rlParams);
RelativeLayout.LayoutParams tParams = new RelativeLayout.LayoutParams
(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
tParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
tParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
TextView text=new TextView(this);
text.setText("GOLDEN Gate");
text.setTextColor(Color.WHITE);
text.setTypeface(Typeface.DEFAULT_BOLD);
text.setLayoutParams(tParams);
rLayout.addView(image);
rLayout.addView(text);
setContentView(rLayout);
答案 1 :(得分:1)
您可能希望尝试使用RelativeLayout作为容器,而不是FrameLayout。这样,您可以将重叠文本放在任何您想要的位置。应该适用于在RelativeLayout中将以下内容分配给TextView:
android:layout_alignParentBottom="true" and android:layout_centerInParent="true"
然后,您可以使用边距微调展示位置。