我有一个已经在xml中创建的LinearLayout(" ll"),app会在其中动态创建另一个LinearLayout,并在该视图中创建一个EditText和一个Button。该按钮使整个LinearLayout与其中的EditText和Button一起销毁(整个系统是一个输入活动的玩家名称)。无论如何,我试图找到一种方法来获取所有EditTexts的文本。我试过在" ll"上使用for循环。并使用ll.getChildAt()
但我无法在.getChildAt()
生成的任何内容上使用ll.getChildAt()
,因为getChildAt()
会生成"视图"不是" LinearLayout。"我基本上只需要一种搜索两个孩子的方法,而不仅仅是一个。另外,如果有更好的方法我应该这样做,请告诉我。我愿意接受建议。
这是我的代码,如果有帮助的话:
NewGameCreate.java
public class NewGameCreate extends Activity {
int numOfPlayers = 0;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.new_game_create);
}
public void newPlayer(View view) {
numOfPlayers++;
final LinearLayout ll = findViewById(R.id.playerView);
final LinearLayout llNew = new LinearLayout(getApplicationContext());
llNew.setOrientation(LinearLayout.HORIZONTAL);
llNew.setId(numOfPlayers);
ll.addView(llNew);
EditText newName = new EditText(this);
newName.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT, 1));
newName.setHint("Enter Player Name");
newName.setId(numOfPlayers);
newName.setWidth(0);
llNew.addView(newName);
final Button delete = new Button(this);
delete.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, 0));
delete.setText("Delete");
delete.setId(numOfPlayers);
delete.setWidth(0);
delete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int id = delete.getId();
ll.removeViewInLayout(findViewById(id));
Drawable back = ll.getBackground();
ll.setBackgroundColor(00000000);
ll.setBackground(back);
ll.invalidate();
}
});
llNew.addView(delete);
}
public void startGame(View view){
LinearLayout ll = findViewById(R.id.playerView);
List text = new ArrayList();
for(int loop = 0; loop < ll.getChildCount(); loop++) {
//this is the code in question and where I want to get the text from
//all my EditTexts
LinearLayout inner = ll.getChildAt(loop);
}
}
}
答案 0 :(得分:1)
我想我找到了答案。您需要在startGame()方法中更改一些代码,我在下面提供了startGame的代码。
public void startGame(View view) {
LinearLayout ll = findViewById(R.id.playerView);
List text = new ArrayList();
for (int loop = 0; loop < ll.getChildCount(); loop++) {
//this is the code in question and where I want to get the text from
//all my EditTexts
LinearLayout inner = (LinearLayout) ll.getChildAt(loop);
for (int j = 0; j < inner.getChildCount(); j++) {
if (inner.getChildAt(j) instanceof EditText) {
EditText textET = (EditText) inner.getChildAt(j);
Log.d("TAG",textET.getText().toString());
}
}
}
}
在上面的代码中,您只能获得第一个子节点,但是当您在父LinearLayout中以方向Vertical添加了一个方向为Horizontal的linearLayout时,您已经为父布局的子节点编写了代码,即playerView。我修改了代码以获取子元素的元素线性布局和日志打印EditText中的所有文本。
希望有所帮助!!