问题描述
限时送ChatGPT账号..我正在开发 Android 版填字游戏应用程序.
我有一个网格视图
public class MainActivity extends Activity {私有 GridView 网格视图;私人按钮按钮;私有 ArrayAdapter适配器;static final String[] numbers = new String[] { "A", "B", "C", "D", "E",F"、G"、H"、I"、J"、K"、L"、M"、N"、O"、P"、Q"、R"",S"、T"、U"、V"、W"、X"、Y"、Z"、A"、B"、C"、D"、E"",F"、G"、H"、I"、J"、K"、L"、M"、N"、O"、P"、Q"、R"","S", "T", "U", "V", "W", "X", "Y", "Z" };@覆盖public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);gridView = (GridView) findViewById(R.id.gridView1);button = (Button) findViewById(R.id.buttonSubmit);适配器 = 新的 ArrayAdapter(this,android.R.layout.simple_list_item_1,数字);gridView.setAdapter(适配器);最终 StringBuilder sb = new StringBuilder();gridView.setOnItemClickListener(new OnItemClickListener() {public void onItemClick(AdapterView<?> parent, View v,int 位置,长 id) {TextView tv = (TextView) v;tv.setBackgroundColor(Color.GREEN);tv.setTag("1");Toast.makeText(getApplicationContext(),((TextView) v).getText(), Toast.LENGTH_SHORT).show();}});}public void onSubmitClick(View v){for(int i=0;i<adapter.getCount();i++){String s = adapter.getItem(i);}}
xml 文件:
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><按钮android:id="@+id/buttonSubmit"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_alignParentBottom="true"机器人:文本=提交"android:onClick="onSubmitClick"></按钮><网格视图android:id="@+id/gridView1"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_above="@id/buttonSubmit"android:layout_alignParentTop="true"android:columnWidth="30dp"机器人:重力=中心"android:numColumns="auto_fit"android:stretchMode="columnWidth" ></GridView></RelativeLayout>
我想要的是遍历 gridview 并找到带有 tag1 的 textviews ......但adapter.getItem 只返回字符串......有什么帮助吗?
解决方案您可以使用 迭代
:GridView
(或任何其他 ViewGroup
)的所有子级getChildAt()
for(int i = 0; i
请注意,有时 GridView
的子级是另一个 ViewGroup
,因此您可能需要遍历 它的 子级,等等.>
然而……更好的方法可能是保留一个单独的标记"List
元素.您可以在标记时简单地将它们添加到列表中并遍历整个列表.
i am working on CrossWord application for Android.
I have a gridview
public class MainActivity extends Activity {
private GridView gridView;
private Button button;
private ArrayAdapter<String> adapter;
static final String[] numbers = new String[] { "A", "B", "C", "D", "E",
"F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
"S", "T", "U", "V", "W", "X", "Y", "Z", "A", "B", "C", "D", "E",
"F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
"S", "T", "U", "V", "W", "X", "Y", "Z" };
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gridView = (GridView) findViewById(R.id.gridView1);
button = (Button) findViewById(R.id.buttonSubmit);
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, numbers);
gridView.setAdapter(adapter);
final StringBuilder sb = new StringBuilder();
gridView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
TextView tv = (TextView) v;
tv.setBackgroundColor(Color.GREEN);
tv.setTag("1");
Toast.makeText(getApplicationContext(),
((TextView) v).getText(), Toast.LENGTH_SHORT).show();
}
});
}
public void onSubmitClick(View v){
for(int i=0;i<adapter.getCount();i++){
String s = adapter.getItem(i);
}
}
xml file :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<Button
android:id="@+id/buttonSubmit"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="Submit"
android:onClick="onSubmitClick">
</Button>
<GridView
android:id="@+id/gridView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@id/buttonSubmit"
android:layout_alignParentTop="true"
android:columnWidth="30dp"
android:gravity="center"
android:numColumns="auto_fit"
android:stretchMode="columnWidth" >
</GridView>
</RelativeLayout>
What i want is to iterate through gridview and find textviews with tag1 ... but adapter.getItem returns only string ... any help ?
解决方案You can iterate over all children of a GridView
(or any other ViewGroup
) with getChildAt()
:
for(int i = 0; i < myGridView.getChildCount(); i++) {
TextView child = (TextView) mGridView.getChildAt(i);
// do stuff with child view
}
Notice that sometimes a GridView
's child is another ViewGroup
, so you may need to loop through it's children, etc.
However... a better way to do this might be to keep a separate List
of "tagged" elements. You can simply add them to the list when tagged and iterate over the entire list.
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