java无法添加自定义视图类
我希望能够使用layout_名称将自定义视图类添加到特定布局。添加视图(自定义视图类实例),或将它们添加到列表视图中
我打算以编程方式添加其中许多视图,并希望能够分别获得每个视图的编辑文本/微调器等值
当我尝试添加此自定义视图时,不会显示任何内容,我在第二次添加视图时也会收到此错误
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
at 安卓.view.ViewGroup.addViewInner(ViewGroup.java:3577)
at 安卓.view.ViewGroup.addView(ViewGroup.java:3430)
at 安卓.view.ViewGroup.addView(ViewGroup.java:3375)
at 安卓.view.ViewGroup.addView(ViewGroup.java:3351)
at com.modup.fragment.CreateFragment.onClick(CreateFragment.java:192)
at 安卓.view.View.performClick(View.java:4442)
at 安卓.view.View$PerformClick.run(View.java:18473)
at 安卓.os.Handler.handleCallback(Handler.java:733)
at 安卓.os.Handler.dispatchMessage(Handler.java:95)
at 安卓.os.Looper.loop(Looper.java:136)
at 安卓.app.ActivityThread.main(ActivityThread.java:5105)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.安卓.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
at com.安卓.internal.os.ZygoteInit.main(ZygoteInit.java:608)
at dalvik.system.NativeStart.main(Native Method)
如何将此具有特定布局的WorkoutView添加到LinearLayout中,该LinearLayout是为setContentView()使用的视图而膨胀的原始布局的一部分强>
更新:
我正在尝试将此视图插入到一个布局中,该布局包含在一个父布局中,该父布局为将视图设置为setContentView()而膨胀
R.id.create_fragment_布局(在原始setContentView()中使用)
R.id.workup\u布局(在创建片段布局内)
I want to insert custom view into this layout, and this custom view needs to have its own R.id.somename_layout with many elements inside.
WorkoutView(自定义类)
public class WorkoutView extends LinearLayout implements View.OnClickListener {
int res_id;
public Spinner spinnerDifficulty, spinnerTime, spinnerMuscleGroup, spinnerSets, spinnerReps;
public EditText etWorkoutName;
public Button btnRemoveWorkout;
String workoutName, muscleGroup, sets, reps;
LayoutInflater inflater;
public WorkoutView(Context context) {
super(context);
}
public WorkoutView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public WorkoutView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
public void init() {
inflate(getContext(), R.layout.single_workout_layout, this);
spinnerDifficulty = (Spinner) findViewById(R.id.spinnerDifficulty);
spinnerReps = (Spinner) findViewById(R.id.spinnerReps);
spinnerSets = (Spinner) findViewById(R.id.spinnerSets);
spinnerMuscleGroup = (Spinner) findViewById(R.id.spinnerWorkoutGroup);
spinnerTime = (Spinner) findViewById(R.id.spinnerTime);
etWorkoutName = (EditText) findViewById(R.id.etWorkoutName);
btnRemoveWorkout = (Button) findViewById(R.id.btnRemoveWorkout);
btnRemoveWorkout.setOnClickListener(this);
}
public String getReps() {
reps = spinnerReps.getSelectedItem().toString();
return reps;
}
public String getWorkoutName() {
workoutName = etWorkoutName.getText().toString().trim();
return workoutName;
}
public String getMuscleGroup() {
muscleGroup = spinnerMuscleGroup.getSelectedItem().toString();
return muscleGroup;
}
public String getSets() {
sets = spinnerSets.getSelectedItem().toString();
return sets;
}
public SingleWorkout getAll() {
//to be designed
return null;
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.btnRemoveWorkout:
Log.e("DID THIS WORK?", "BUTTON PRESSED");
break;
}
}
}
我如何创建视图
workoutView = new WorkoutView(getActivity());
如何将视图添加到线性布局中
workoutLayout.addView(workoutView);
# 1 楼答案
一,。要保留单个视图的数据,需要为它们分配一个唯一的id。 您可以在运行时生成唯一id,并参考此链接
Android: View.setID(int id) programmatically - how to avoid ID conflicts?维护唯一id
二,。对于第二个问题,我认为你需要创建另一个视图对象,并将其添加到训练布局中
# 2 楼答案
您正在自定义类中扩展布局文件。因此,您已经在该自定义类中添加了一个视图,并且再次在这里执行相同的操作
所以问题就出现了。你需要改变以下内容