如何以编程方式将元素彼此并排放置？

Question

我有一个微调框，复选框和eddittext。目前，他们都是一个人，但我想做到，让他们彼此并肩

例如：

左边的微调框，右边的编辑文本，然后是右边的复选框。

是否可以通过编程方式执行此操作，因为这些元素是通过编程创建的。

java代码

public class create extends AppCompatActivity {


    private LinearLayout mLinearLayout;
    private ArrayList<SearchableSpinner> mSpinners;
    private List<AppCompatButton> mButtons = new ArrayList<>();
    private List<CheckBox> mCheckboxes = new ArrayList<>();
    private List<TextView> mTextviews = new ArrayList<>();
    private List<EditText> mEdittexts = new ArrayList<>();
    private List<View> mViews = new ArrayList<>();
    private Map<String, String> numberItemValues = new HashMap<>();
    private Spinner spinner;
    private TextView textview;
    private CheckBox checkbox;
    List<String> itemList = new ArrayList<>();
    LinearLayout verticallayout,horizontalLayout;
    public static final String MY_PREFS_NAME = "MyPrefsFile";
    TextView newTextview;







    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_create);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        findViewById(R.id.my_linearLayout).requestFocus();

        verticallayout = findViewById(R.id.verticalLayout); //got






        //Arrays
        ArrayList<String> items = new ArrayList<>();
        items.add(String.valueOf(mSpinners)); // add you selected item
        mSpinners = new ArrayList<>();




        //Initializing Variables Here
        mLinearLayout = findViewById(R.id.my_linearLayout);
        //verticallayout = findViewById(R.id.verticalLayout);
        textview = findViewById(R.id.textview);
        checkbox = findViewById(R.id.checkbox);





        //TODO getting shared prefs on create
        SharedPreferences prefs = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE);

        try {
            JSONArray jsonArray2 = new JSONArray(prefs.getString("key", null));
            for (int i = 0; i < jsonArray2.length(); i++) {



              /*  final Spinner spinner = makeSpinner();
                mLinearLayout.addView(spinner);*/

                final View newView = makeView();
                //Add a new view
                mLinearLayout.addView(newView);
                mViews.add(newView);


              /* final EditText newEdittext = makeEdittext();
                mLinearLayout.addView(newEdittext);
                mEdittexts.add(newEdittext);



                final CheckBox newCheckbox = makeCheckbox();
                mLinearLayout.addView(newCheckbox);

                //TODO add checkbox to your list
                mCheckboxes.add(newCheckbox);*/

                createRow();


                newTextview = makeTextview();
                mLinearLayout.removeAllViews();
                mLinearLayout.addView(newTextview);
                mTextviews.add(newTextview);











                final int listSize = mViews.size();

                //TODO deleting item
                horizontalLayout.setOnClickListener(new View.OnClickListener() {
                    //start
                    @Override
                    public void onClick(View view) {

                        //when the 'new button' is pressed, alert shows if you are sure you want to delete the item or not.

                        final View.OnClickListener context = this;


                        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(create.this);


                        // set title
                        alertDialogBuilder.setTitle("Delete Item");

                        // set dialog message
                        alertDialogBuilder
                                .setMessage("Are you sure you want to delete this item?")
                                .setCancelable(false)
                                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface dialog, int id) {
                                        // if this button is clicked, close
                                        // current activity


                                        if (listSize > 0) {

                                            //mCheckboxes.get(listSize - 1).setVisibility(View.GONE);
                                            mSpinners.get(listSize - 1).setVisibility(View.GONE);
                                            // mSpinners.remove(listSize - 1);

                                            mViews.get(listSize - 1).setVisibility(View.GONE);
                                            mTextviews.get(listSize - 1).setVisibility(View.GONE);
                                            // mEdittexts.get(listSize - 1).setVisibility(View.GONE);
                                            Toast.makeText(getBaseContext(), "Item removed.", Toast.LENGTH_SHORT).show();

                                        }


                                    }
                                })
                                .setNegativeButton("No", new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface dialog, int id) {
                                        // if this button is clicked, just close
                                        // the dialog box and do nothing
                                        dialog.cancel();
                                    }
                                });

                        // create alert dialog
                        AlertDialog alertDialog = alertDialogBuilder.create();

                        // show it
                        alertDialog.show();


                    }
                });





                int positionOfSpinner = (int) jsonArray2.get(i);
                spinner.setSelection(positionOfSpinner);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        //end of shared pref  code








        //TODO FAB BUTTON
        FloatingActionButton floatingActionButton =
                (FloatingActionButton) findViewById(R.id.fab);


        floatingActionButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(getBaseContext(), "Item added!", Toast.LENGTH_SHORT).show();
                spinner = findViewById(R.id.spinner);



                // Handle ze click.
               /* final Spinner spinner = makeSpinner();
                mLinearLayout.addView(spinner);


                LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) spinner.getLayoutParams();
                layoutParams.setMargins(5, 100, 10, 0); //top 70

                Resources resources = getResources();
                DisplayMetrics metrics = resources.getDisplayMetrics();

                layoutParams.height = (int) (70 * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT)); //80
                layoutParams.width = (int) (240 * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT)); //240
                spinner.setLayoutParams(layoutParams);
*/
                final View newView = makeView();
                mLinearLayout.addView(newView);
                mViews.add(newView);


               /* final EditText newEdittext = makeEdittext();
                mLinearLayout.addView(newEdittext);
                mEdittexts.add(newEdittext);*/

                createRow();

                final int listSize = mViews.size();

                //code for deleting the said item.



                horizontalLayout.setOnClickListener(new View.OnClickListener() {
                    //start
                    @Override
                    public void onClick(View view) {

                        //when the 'new button' is pressed, alert shows if you are sure you want to delete the item or not.

                        final View.OnClickListener context = this;


                        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(create.this);



                        // set title
                        alertDialogBuilder.setTitle("Delete Item");

                        // set dialog message
                        alertDialogBuilder
                                .setMessage("Are you sure you want to delete this item?")
                                .setCancelable(false)
                                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface dialog, int id) {
                                        // if this button is clicked, close
                                        // current activity


                                        if (listSize > 0) {

                                            //mCheckboxes.get(listSize - 1).setVisibility(View.GONE);
                                            mSpinners.get(listSize - 1).setVisibility(View.GONE);
                                            mSpinners.remove(listSize - 1);
                                            mViews.get(listSize - 1).setVisibility(View.GONE);
                                            mTextviews.get(listSize - 1).setVisibility(View.GONE);
                                            //mEdittexts.get(listSize - 1).setVisibility(View.GONE);
                                            Toast.makeText(getBaseContext(), "Item removed.", Toast.LENGTH_SHORT).show();

                                        }
                                    }
                                })
                                .setNegativeButton("No", new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface dialog, int id) {
                                        // if this button is clicked, just close
                                        // the dialog box and do nothing
                                        dialog.cancel();
                                    }
                                });

                        // create alert dialog
                        AlertDialog alertDialog = alertDialogBuilder.create();

                        // show it
                        alertDialog.show();


                    }
                });

                //Add a new checkbox
               /* final CheckBox newCheckbox = makeCheckbox();
                mLinearLayout.addView(newCheckbox);

                //TODO add checkbox to your list
                mCheckboxes.add(newCheckbox);*/


                newTextview = makeTextview();
                mLinearLayout.removeAllViews();
                mLinearLayout.addView(newTextview);
                mTextviews.add(newTextview);

                //TODO Add the spinner on item selected listener to get selected items
                spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
                    @Override
                    public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
                        String currentItem = itemList.get(position);
                        String aisleNumber = numberItemValues.get(currentItem);
                        //TODO you can use the above aisle number to add to your text view
                        //mTextviews.get(mTextviews.size() -1).setText(aisleNumber);
                        newTextview.setText(aisleNumber);
                    }

                    @Override
                    public void onNothingSelected(AdapterView<?> parentView) {
                        //  code here, do nothing
                    }

                });


            }
        });

    }



















    //TODO OVERFLOW MENU
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.create_menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        int id = item.getItemId();

        if (id == R.id.action_settings) {
            /*Intent startSettingsActivity = new Intent(this, AppCompatPreferenceActivity.class);
            startActivity(startSettingsActivity);
            //start the settings activity here.*/

            startActivity(new Intent(create.this, settings.class));





            return true;
        }


        else if (id == R.id.action_delete) {
            //code to delete list here.

            SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit();
            editor.clear();
            editor.commit();

            Toast.makeText(getBaseContext(), "List removed.", Toast.LENGTH_SHORT).show();
            return true;
        }


        else if (id ==R.id.action_help)  {


            // setup the alert builder
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("Help");
            builder.setMessage("To use this app, first go to Create your Shopping List.\n" +
                    "Here, you can add items to your list. Once you have added all items, you can click the menu at the top right corner (or if it doesnt appear press your menu button beside your home button on your device, then click View your List.\n" +
                    "This will take you to the screen where you can view you shopping list with the items in aisle order to make your shop much easier.\n" +
                    "You can still add items at this point. Press the white background of each item to delete the item if you wish.");

            // add a button
            builder.setPositiveButton("OK", null);

            // create and show the alert dialog
            AlertDialog dialog = builder.create();
            dialog.show();


            return true;

        }




        else if (id == R.id.action_gotoview) {


            //takes the size of the list of spinners, for reference
            ArrayList<Integer> spinnerList = new ArrayList<>();
            for(int i = 0; i < mSpinners.size(); i++) {
                spinnerList.add(mSpinners.get(i).getSelectedItemPosition());

            }
            Bundle newBundle = new Bundle();
            newBundle.putIntegerArrayList("arraylist", spinnerList);
            Intent newIntent = new Intent(create.this, viewscreen.class);
            newIntent.putExtra("extraBundle", newBundle);

            startActivity(newIntent);



            //code to go to view screen, aka intent
            return true;
        }



        return super.onOptionsItemSelected(item);
    }






    public void createRow(View view){

        createRow(); //got

    }


    private void createRow() { //got

        horizontalLayout = new LinearLayout(this);

        LinearLayout.LayoutParams horizontalParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        horizontalLayout.setOrientation(LinearLayout.HORIZONTAL);
        horizontalParams.height = 80;
        horizontalParams.setMargins(0, 15, 0, 15); // LEFT, TOP, RIGHT, BOTTOM
        horizontalLayout.setLayoutParams(horizontalParams);
        horizontalLayout.setBackgroundColor(ContextCompat.getColor(this, R.color.addButtons));


        makeEdittext();
        makeCheckbox();
        makeSpinner();
        makeTextview();



        verticallayout.addView(horizontalLayout, horizontalParams);
    }







    //DUPLICATING ITEMS WHEN FAB IS PRESSED//
    private CheckBox makeCheckbox() {
        //Create new Checkbox
        CheckBox checkbox = new CheckBox(this);

        // Setup layout
  /*      LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);


        //setup relative layout for the positioning of the objects
        Resources resources = getResources();
        DisplayMetrics metrics = resources.getDisplayMetrics();
        RelativeLayout.LayoutParams relativeParams = new RelativeLayout.LayoutParams((int) (70 * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT)), (int) (240 * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT)));
        relativeParams.addRule(RelativeLayout.RIGHT_OF, R.id.textview);

        checkbox.setLayoutParams(relativeParams);
        checkbox.setLayoutParams(layoutParams);*/



        LinearLayout.LayoutParams checkParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        checkParams.setMargins(10, 10, 10, 10);
        checkParams.gravity = Gravity.LEFT;

        checkbox.setLayoutParams(checkParams);
        horizontalLayout.addView(checkbox);


        return checkbox;
    }



    private TextView makeTextview() {
        //create new textview
        TextView textview = new TextView(this);

        //setup layout

/*        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);
        textview.setLayoutParams(layoutParams);*/

        LinearLayout.LayoutParams editParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        editParams.setMargins(10, 10, 10, 10);
        editParams.width = 70;
        editParams.height = 50;

        textview.setLayoutParams(editParams);
        horizontalLayout.addView(textview);
        textview.setTextSize(30);

        return textview;
    }



    private EditText makeEdittext() {
        //create new edittext
        EditText edittext = new EditText(this);

        //setup layout
       /* final LinearLayout.LayoutParams lparams = new LinearLayout.LayoutParams(70, 50); // Width , height
        edittext.setLayoutParams(lparams);*/



        LinearLayout.LayoutParams editParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        editParams.setMargins(10, 10, 10, 10);
        editParams.width = 70;
        editParams.height = 50;

        edittext.setLayoutParams(editParams);
        horizontalLayout.addView(edittext);


        edittext.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL | InputType.TYPE_NUMBER_FLAG_SIGNED);
        edittext.setHint("qty");

        return edittext;

    }

//set the  3d effect to view

    private View makeView() {
        //create new View

        View view = new View(this);
        view.setBackgroundColor(Color.parseColor("#ffffff"));
        LinearLayout.LayoutParams layoutParams =  new LinearLayout.LayoutParams( LinearLayout.LayoutParams.MATCH_PARENT, 100);
        new LinearLayout.LayoutParams( LinearLayout.LayoutParams.WRAP_CONTENT, 50);


        view.setLayoutParams(layoutParams);


        view.setClickable(true);

        //view.setLayoutParams(layoutParams);


        //setup layout

        return view;


    }














    private Spinner makeSpinner() {
        //opens csv
        InputStream inputStream = getResources().openRawResource(R.raw.shopitems);
        CSVFile csvFile = new CSVFile(inputStream);
        //TODO I made this variable global, declared it at the very top of this file
        itemList = csvFile.read();

        //Create new spinner
        // SearchableSpinner spinner = (SearchableSpinner) new Spinner(this, Spinner.MODE_DROPDOWN);
        SearchableSpinner spinner = new SearchableSpinner(this);


        // Setup layout

        LinearLayout.LayoutParams spinnerParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        spinnerParams.setMargins(10, 10, 10, 10);
        spinnerParams.gravity = Gravity.LEFT;

        Resources resources = getResources();
        DisplayMetrics metrics = resources.getDisplayMetrics();

        spinnerParams.height = (int) (70 * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT)); //80
        spinnerParams.width = (int) (240 * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT)); //240

        spinner.setLayoutParams(spinnerParams);
        horizontalLayout.addView(spinner);

    /*    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);
        spinner.setLayoutParams(layoutParams);*/



        MyListAdapter adapter = new MyListAdapter(this, R.layout.listrow, R.id.txtid, itemList);


        spinner.setAdapter(adapter);





        //Add it to your list of spinners so you can retrieve their data when you click the getSpinner button
        mSpinners.add(spinner);



        //TODO Add the spinner on item selected listener to get selected items
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
                String currentItem = itemList.get(position);
                String aisleNumber = numberItemValues.get(currentItem);
                //TODO you can use the above aisle number to add to your text view
                //mTextviews.get(mTextviews.size() -1).setText(aisleNumber);
                newTextview.setText(aisleNumber);
            }

            @Override
            public void onNothingSelected(AdapterView<?> parentView) {
                //  do nothing
            }
        });




        return spinner;
    }



    private class CSVFile {
        InputStream inputStream;

        public CSVFile(InputStream inputStream) {
            this.inputStream = inputStream;
        }

        public List<String> read() {

            List<String> resultList = new ArrayList<String>();
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
            try {
                String line;
                while ((line = reader.readLine()) != null) {
                    String[] row = line.split(",");
                    //TODO I edited this part so that you'd add the values in our new hash map variable
                    numberItemValues.put(row[1], row[0]);
                    resultList.add(row[1]);
                }
            } catch (IOException e) {
                Log.e("Main", e.getMessage());
            } finally {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    Log.e("Main", e.getMessage());
                }
            }
            return resultList;
        }
    }


    //on stop, the things are saved into shared prefs
    @Override
    protected void onStop () {

        //public static final String MY_PREFS_NAME = "MyPrefsFile";
        SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit();
        JSONArray jsonArray = new JSONArray();
        for(int i = 0; i < mSpinners.size(); i++) {
            jsonArray.put(mSpinners.get(i).getSelectedItemPosition());

        }

        editor.putString("key", jsonArray.toString());
        editor.apply();


        super.onStop();
    }

}

我收到此错误

java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

在此行

            mLinearLayout.addView(newTextview);

Answer 1

将线性布局方向设置为水平

<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/my_linearLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">

Answer 2

尝试这种方式

home_activity.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="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:onClick="createRow"
        android:text="Create Row" />

    <LinearLayout
        android:id="@+id/verticalLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

    </LinearLayout>
</LinearLayout>

HomeActivity.java

public class HomeActivity extends AppCompatActivity {
    LinearLayout verticallayout, horizontalLayout;
    int width;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.home_activity);
        verticallayout = findViewById(R.id.verticalLayout);
        DisplayMetrics displayMetrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
        width = displayMetrics.widthPixels;

    }

    public void createRow(View view) {
        createRow();
    }

    private void createRow() {
        horizontalLayout = new LinearLayout(this);
        LinearLayout.LayoutParams horizontalParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        horizontalLayout.setOrientation(LinearLayout.HORIZONTAL);
        horizontalLayout.setLayoutParams(horizontalParams);

        createSpinner();
        createCheckbox();
        createEditText();

        verticallayout.addView(horizontalLayout);
    }

    private void createEditText() {
        EditText editText = new EditText(this);

        LinearLayout.LayoutParams editParams = new LinearLayout.LayoutParams((width/3), convertDpToPixel(40));
        editParams.setMargins(10, 10, 10, 10);

        editText.setLayoutParams(editParams);
        editText.setHint("Enter something");
        editText.setTextSize(14f);
        horizontalLayout.addView(editText);
    }


    private void createCheckbox() {
        CheckBox checkBox = new CheckBox(this);

        LinearLayout.LayoutParams checkParams = new LinearLayout.LayoutParams((width/3), convertDpToPixel(40));
        checkParams.setMargins(10, 10, 10, 10);
//        checkParams.gravity = Gravity.LEFT;

        checkBox.setLayoutParams(checkParams);
        checkBox.setText("Is Applicable");
        horizontalLayout.addView(checkBox);

    }

    private void createSpinner() {
        Spinner spinner = new Spinner(this);
        LinearLayout.LayoutParams spinnerParams = new LinearLayout.LayoutParams((width/3), convertDpToPixel(40));;
        spinnerParams.setMargins(10, 10, 10, 10);
//        spinnerParams.gravity = Gravity.LEFT;

        spinner.setLayoutParams(spinnerParams);
        String[] item = new String[]{"item1","item2","item3","item4","item5","item6","item7"};
        ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_dropdown_item, item);
        spinner.setAdapter(spinnerArrayAdapter);
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                System.out.println(parent.getSelectedItem().toString());
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });

        horizontalLayout.addView(spinner);
    }


    public int convertDpToPixel(int dp) {
        DisplayMetrics metrics = getResources().getDisplayMetrics();
        return dp * ((int) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT);
    }

}

可能是这段代码产生了一些边距问题，但是您可以通过管理Params.setMargins(10, 10, 10, 10)

的值来解决

让我知道是否有任何问题。

Answer 3

我能够通过使用XML（垂直方向）中的静态线性布局并动态添加元素的水平行来实现这一目标。

layout.xml

<?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">
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:gravity="right"
        android:onClick="createRow"
        android:text="Create Row" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:id="@+id/verticalLayout"
        android:layout_below="@id/button">

    </LinearLayout>
</RelativeLayout>

用于动态添加布局的活动

public class MyLayoutActivity extends AppCompatActivity {

    LinearLayout verticallayout,horizontalLayout;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_poc);

        verticallayout = findViewById(R.id.verticalLayout);

    }

    public void createRow(View view){

        createRow();

    }

    private void createRow() {

        horizontalLayout = new LinearLayout(this);

        LinearLayout.LayoutParams horizontalParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        horizontalLayout.setOrientation(LinearLayout.HORIZONTAL);
        horizontalLayout.setLayoutParams(horizontalParams);

        createSpinner();
        createCheckbox();
        createEditText();

        verticallayout.addView(horizontalLayout);
    }

    private void createEditText() {
        EditText editText = new EditText(this);

        LinearLayout.LayoutParams editParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        editParams.setMargins(10, 10, 10, 10);

        editText.setLayoutParams(editParams);
        horizontalLayout.addView(editText);
    }


    private void createCheckbox() {
        CheckBox checkBox = new CheckBox(this);

        LinearLayout.LayoutParams checkParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        checkParams.setMargins(10, 10, 10, 10);
        checkParams.gravity = Gravity.LEFT;

        checkBox.setLayoutParams(checkParams);
        horizontalLayout.addView(checkBox);

    }

    private void createSpinner() {

        Spinner spinner = new Spinner(this);
        //ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_dropdown_item, spinnerArray);
        //spinner.setAdapter(spinnerArrayAdapter);
        LinearLayout.LayoutParams spinnerParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        spinnerParams.setMargins(10, 10, 10, 10);
        spinnerParams.gravity = Gravity.LEFT;

        spinner.setLayoutParams(spinnerParams);
        horizontalLayout.addView(spinner);
    }
}

根据逻辑将数据添加到阵列适配器中的微调器。您可以根据设计更改布局参数。我的代码给出如下图所示的输出：

Answer 4

其他答案表明您始终可以动态创建视图。但是我认为应该采取的措施是创建所需的XML行，然后将其添加到布局中。

LayoutInflater inflater = LayoutInflater.from(context);
View v = inflater.inflate(R.layout.yourxmlrow, null, false);
linearLayout.addView(v);

Answer 5

您可以将LinearLayout方向设置为水平

mLinearLayout.setOrientation(LinearLayout.HORIZONTAL);