[英]Android - LayoutInflater - Cant make textview stay below another textview
我正在使用LayoutInflater使用GridAdapter填充網格視圖,但是當我嘗試將textView放置在布局中的另一個textView下方時,我將其充氣,它最終位於我的textView上方而不是下方。 當我改為將其更改為layout_above時,它甚至沒有出現在屏幕上。 我膨脹的布局:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent"
android:id="@+id/menuBookModel">
<ImageView
android:id="@+id/bookImage"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_margin="5dp"/>
<TextView
android:id="@+id/bookName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Test Text"
android:textSize="20sp"
android:textColor="@color/colorPrimaryDark"
android:layout_centerInParent="true"/>
<TextView
android:id="@+id/personalTag"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/bookName"
android:text="(Personal)"
android:layout_centerHorizontal="true"
android:textColor="@color/colorPrimaryDark"
android:textSize="15sp" />
</RelativeLayout>
我膨脹的Java代碼:
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(view == null){
view = inflater.inflate(R.layout.menu_book_model, null);
}
TextView bookName = view.findViewById(R.id.bookName);
TextView personalTag = view.findViewById(R.id.personalTag);
ImageView bookImage = view.findViewById(R.id.bookImage);
bookImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String s = String.valueOf(view.getTag());
aListener.chooseBook(s);
}
});
int id = context.getResources().getIdentifier(books[i], "string", context.getPackageName());
//if id == 0 the book is custom, and therefore it has the custom name
if(id == 0){
bookName.setText(books[i]);
} else {
bookName.setText(context.getString(id));
personalTag.setVisibility(View.GONE);
}
bookImage.setBackgroundColor(Color.rgb(random.nextInt(255),random.nextInt(255),random.nextInt(255)));
bookImage.setTag(books[i]);
return view;
}
預覽中的外觀: 預覽
但是,這是怎么看的做法: 在實踐中
您還需要在id
為0時處理personalTag
可見性,因為在回收視圖時它可能不可見:
if(id == 0){
bookName.setText(books[i]);
personalTag.setVisibility(View.VISIBLE);
} else {
bookName.setText(context.getString(id));
personalTag.setVisibility(View.GONE);
}
此外,還要避免設置你的根RelativeLayout
與match_parent
高度,他們通常在突破 AdapterViews
,嘗試wrap_content
或任何硬值,或調整布局:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="100dp"
android:id="@+id/menuBookModel">
<ImageView
android:id="@+id/bookImage"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_margin="5dp"/>
<TextView
android:id="@+id/bookName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Test Text"
android:layout_centerInParent="true"
android:textSize="20sp"
android:textColor="@color/colorPrimaryDark"/>
<TextView
android:id="@+id/personalTag"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/bookName"
android:layout_centerHorizontal="true"
android:text="(Personal)"
android:textColor="@color/colorPrimaryDark"
android:textSize="15sp" />
</RelativeLayout>
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