我正在尝试在我的 LinearLayout 中添加一个动态视图，并尝试实现诸如捕获与 time 对应的每个微调器值之类的东西。这里的任何人都可以指导我如何做到这一点。我正在尝试它，但它不起作用，因为基于单击“添加文件”按钮可以有无限行带有微调器。我需要从每个微调器收集值，然后需要创建一个数组。
这是我的代码：
public class MainActivity extends Activity {
private LinearLayout parentLinearLayout;
private EditText mEditText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
parentLinearLayout=(LinearLayout) findViewById(R.id.parent_linear_layout);
}
public void onAddField(View v) {
LayoutInflater inflater=(LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View rowView=inflater.inflate(R.layout.container_item, null);
final EditText text1 = (EditText) rowView.findViewById(R.id.number_edit_text);
final EditText text2 = (EditText) rowView.findViewById(R.id.number_edit_text2);
final EditText text3 = (EditText) rowView.findViewById(R.id.number_edit_text3);
text1.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
if (s.length() > 0) {
text3.setText(text1.getText().toString());
Toast.makeText(MainActivity.this,""+s.toString(),Toast.LENGTH_LONG).show();
}
}
});
text2.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
if (s.length() > 0) {
int val = Integer.parseInt(text1.getText().toString());
int val2 = Integer.parseInt(text2.getText().toString());
if(val2>val)
{
}else{
int finalval=val-val2;
text3.setText(""+finalval);
}
Toast.makeText(MainActivity.this,""+s.toString(),Toast.LENGTH_LONG).show();
}
}
});
text3.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
if (s.length() > 0) {
Toast.makeText(MainActivity.this,""+s.toString(),Toast.LENGTH_LONG).show();
}
}
});
parentLinearLayout.addView(rowView, parentLinearLayout.getChildCount());
}
public void onDelete(View v) {
parentLinearLayout.removeView((View) v.getParent());
}
public void onGetField(View v){
int count = parentLinearLayout.getChildCount();
for (int i = 0; i < count; i++) {
final View row = parentLinearLayout.getChildAt(i);
EditText textOut = (EditText) row.findViewById(R.id.number_edit_text);
String data = textOut.getText().toString();
Toast.makeText(this,""+data,Toast.LENGTH_LONG).show();
}
}
}
动态视图 XML：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="horizontal">
<EditText
android:id="@+id/number_edit_text"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".2"
android:inputType="phone"/>
<EditText
android:id="@+id/number_edit_text2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".2"
android:inputType="phone"/>
<EditText
android:id="@+id/number_edit_text3"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".2"
android:inputType="phone"/>
<Spinner
android:id="@+id/type_spinner"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:entries="@array/types"
android:gravity="right" />
<Button
android:id="@+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight=".1"
android:background="@android:drawable/ic_delete"
android:onClick="onDelete"/>
</LinearLayout>
主要 XML：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:orientation="vertical">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:id="@+id/parent_linear_layout"
android:layout_height="wrap_content"
android:orientation="vertical" >
</LinearLayout>
<Button
android:id="@+id/add_field_button"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:background="#555"
android:layout_gravity="center"
android:onClick="onAddField"
android:textColor="#FFF"
android:text="Add Field"
android:paddingLeft="5dp"/>
<Button
android:id="@+id/get_field_button"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:background="#555"
android:layout_gravity="center"
android:onClick="onGetField"
android:textColor="#FFF"
android:text="Get Field"
android:paddingLeft="5dp"/>
</LinearLayout>
请让我知道您对此提出的宝贵建议。从最后一天开始我就被困住了。
这是附加的图像，在图像中您可以看到第三个编辑文本是空的，我需要通过在第一个两个编辑文本上使用文本观察器来填充，例如 2（第一个编辑文本）-1（第二个编辑文本） = 1（在第三个编辑文本上）。
问候
下面是使用 Recyclerview 的第二种方法：
主要活动：
public class MainActivity extends AppCompatActivity {
int position=0;
List<Container_Add_model> main_modelList = new ArrayList<>();
RecyclerView recyclerView_container;
TextView Tv_add_container;
Container_Add_Adapter rvAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView_container = findViewById(R.id.recyclerView_container);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView_container.setLayoutManager(layoutManager);
Tv_add_container = findViewById(R.id.Tv_add_container);
rvAdapter = new Container_Add_Adapter(MainActivity.this, main_modelList,this, new Container_Add_Adapter.Onclick() {
@Override
public void onEvent(Container_Add_model model, int pos) {
}
});
recyclerView_container.setAdapter(rvAdapter);
Tv_add_container.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
rvAdapter.addClick();
}
});
}
适配器类：
public class Container_Add_Adapter extends RecyclerView.Adapter<Container_Add_Adapter.RvViewHolder> {
Activity context;
List<Container_Add_model> models;
Onclick onclick;
View view;
EditTextAdded editTextAdded;
private int container_number_pending, container_number_taken, container_number_given;
public Container_Add_Adapter(Activity context, List<Container_Add_model> models,EditTextAdded editTextAdded, Onclick onclick) {
this.context = context;
this.models = models;
this.editTextAdded = editTextAdded;
this.onclick = onclick;
}
@Override
public Container_Add_Adapter.RvViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
view = inflater.from(parent.getContext()).inflate(R.layout.container_item, parent, false);
RvViewHolder rvViewHolder = new RvViewHolder(view);
return rvViewHolder;
}
@Override
public void onBindViewHolder(final Container_Add_Adapter.RvViewHolder holder, final int position) {
final Container_Add_model model = models.get(position);
holder.Edttxt_given_container.setText(models.get(position).container_given+"");
holder.Edttxt_given_container.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
if (s.length() > 0) {
// models.get(position).container_given = Integer.valueOf(s.toString());
}
}
});
holder.Edttxt_taken_container.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
if (s.length() != 0) {
if (!holder.Edttxt_given_container.getText().toString().isEmpty()) {
container_number_given = Integer.parseInt(holder.Edttxt_given_container.getText().toString());
int number = container_number_given + container_number_pending;
int input_num = Integer.parseInt(s.toString());
if (number >= input_num) {
container_number_taken = Integer.parseInt(holder.Edttxt_taken_container.getText().toString());
int final_num = number - container_number_taken;
holder.Edttxt_Pending_container.setText("" + final_num);
} else {
holder.Edttxt_taken_container.setText("");
}
} else {
holder.Edttxt_taken_container.setText("");
}
} else {
if (!holder.Edttxt_given_container.getText().toString().isEmpty()) {
container_number_given = Integer.parseInt(holder.Edttxt_given_container.getText().toString());
if (container_number_given > 0) {
int finalnum = container_number_given + container_number_pending;
holder.Edttxt_Pending_container.setText("" + finalnum);
} else {
holder.Edttxt_Pending_container.setText("" + container_number_pending);
}
} else {
holder.Edttxt_Pending_container.setText("" + container_number_pending);
}
}
}
});
holder.Iv_delete_container.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
models.remove(position);
notifyItemChanged(position);
notifyItemRangeChanged (position, models.size());
}
});
}
public void addClick(){
Container_Add_model container_main_model = new Container_Add_model();
container_main_model.setContainer_given(0);
container_main_model.setContainer_pending(0);
container_main_model.setContainer_taken(0);
container_main_model.setContainer_id(models.size());
container_main_model.setContainer_name("");
models.add(container_main_model);
//notifyDataSetChanged(models);
notifyItemInserted(models.size() + 1);
}
@Override
public int getItemCount() {
return models.size();
}
public interface Onclick {
void onEvent(Container_Add_model model, int pos);
}
public class RvViewHolder extends RecyclerView.ViewHolder {
TextView Tv_container_type;
EditText Edttxt_given_container, Edttxt_taken_container, Edttxt_Pending_container;
LinearLayout llItem;
ImageView Iv_delete_container;
public RvViewHolder(View itemView) {
super(itemView);
Tv_container_type = itemView.findViewById(R.id.Tv_container_type);
Iv_delete_container = itemView.findViewById(R.id.Iv_delete_container);
Edttxt_given_container = itemView.findViewById(R.id.Edttxt_given_container);
Edttxt_Pending_container = itemView.findViewById(R.id.Edttxt_Pending_container);
Edttxt_taken_container = itemView.findViewById(R.id.Edttxt_taken_container);
}
}
}