Question

我完成了我的应用并添加了一些功能。广告示例用户可以更改文字大小。所以我已经创建了一个活动，您可以选择文本大小。这是代码：

public class Options extends AppCompatActivity {
RadioButton r1;


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


    RadioGroup rdgroup = (RadioGroup)findViewById(R.id.radioGroup);
    r1 = (RadioButton)findViewById(R.id.radioButton);
    r1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            ClasseDiAppoggio.setSize(10);
        }
    });

}
}

这是ClasseDiAppoggi类的代码：

public class ClasseDiAppoggio {
private static float size = 20;

public static void setSize(float sizex){
    size = sizex;
}

public static float getSize(){
    return size;
}
}

以下是适配器的代码：

public class MyAdapter extends ArrayAdapter<Model> {
static View globalView;
private TreeSet mSeparatorsSet = new TreeSet();
public final List<Model> list;
private final Activity context;
public String textToSay;
private int mCurrentTtsPosition = -1;
Boolean testCheck = false;
public MyAdapter(Activity context, List<Model> list) {
    super(context, R.layout.row, list);

    this.context = context;
    this.list = list;
}
@Override
public int getItemViewType(int position) {
    if (list.get(position).getVersion() == 0) {
        return 0;
    }
    if (list.get(position).getVersion() == 2) {
        return 2;
    }
    if (list.get(position).getVersion() == 3) {
        return 3;
    }
    if (list.get(position).getVersion() == 4) {
        return 4;
    }
    if (list.get(position).getVersion() == 5) {
        return 5;
    }

    return 1;
}

@Override
public int getViewTypeCount() {
    return 6;
}

public void onStopTts(){
    mCurrentTtsPosition = -1;
    notifyDataSetChanged();
}

static class ViewHolder {
    public TextView text;
    public TextView text2;
    public CheckBox checkbox;
    public TextView textSeparator;
    public Button btncheck;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder viewHolder = null;
    if (this.getItemViewType(position)== 0){
        if (convertView == null) {
            LayoutInflater inflator = context.getLayoutInflater();
            viewHolder = new ViewHolder();
            convertView = inflator.inflate(R.layout.title_row, null);
            viewHolder.textSeparator = (TextView) convertView.findViewById(R.id.textView);
            convertView.setTag(viewHolder);
            convertView.setTag(R.id.textView, viewHolder.textSeparator);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }
        viewHolder.textSeparator.setText(list.get(position).getName());
        return convertView;
    } else if (this.getItemViewType(position)== 2){
        if (convertView == null) {
            LayoutInflater inflator = context.getLayoutInflater();
            viewHolder = new ViewHolder();
            convertView = inflator.inflate(R.layout.sub_title_row, null);
            viewHolder.textSeparator = (TextView) convertView.findViewById(R.id.textView);

            convertView.setTag(viewHolder);
            convertView.setTag(R.id.textView, viewHolder.textSeparator);

        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }
        viewHolder.textSeparator.setText(list.get(position).getName());
        return convertView;
    }  else if (this.getItemViewType(position)== 4){
        if (convertView == null) {
            LayoutInflater inflator = context.getLayoutInflater();
            viewHolder = new ViewHolder();
            convertView = inflator.inflate(R.layout.row_tri_title, null);

            viewHolder.text = (TextView) convertView.findViewById(R.id.textView5);
            convertView.setTag(viewHolder);
            convertView.setTag(R.id.textView5, viewHolder.text);

        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        viewHolder.text.setText(list.get(position).getName());

        return convertView;
    } else if (this.getItemViewType(position)== 5){
        if (convertView == null) {
            LayoutInflater inflator = context.getLayoutInflater();
            viewHolder = new ViewHolder();
            convertView = inflator.inflate(R.layout.row_tri, null);
            viewHolder.text = (TextView) convertView.findViewById(R.id.textView3);
            convertView.setTag(viewHolder);
            convertView.setTag(R.id.textView3, viewHolder.text);

        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }
        viewHolder.text.setText(list.get(position).getName());
        return convertView;

    } else if (this.getItemViewType(position)== 3){
        if (convertView == null) {
            LayoutInflater inflator = context.getLayoutInflater();

            convertView = inflator.inflate(R.layout.button_row, null);
            viewHolder = new ViewHolder();
            viewHolder.btncheck = (Button)convertView.findViewById(R.id.btncheck);

            convertView.setTag(viewHolder);
            convertView.setTag(R.id.btncheck, viewHolder.btncheck);

        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        final ViewHolder finalViewHolder = viewHolder;

        viewHolder.btncheck.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                for (Model i: list) {

                    if (i.getVersion() == 1) {
                        if (!i.isSelected()) {
                            testCheck = false;
                        }
                    }
                }

                if(testCheck){
                    OneFragment.startSpeak("è stato controllato tutto");
                } else {
                    OneFragment.startSpeak("Manca qualcosa, ricontrolla");

                }
            }
        });

        return convertView;
    }


    if (convertView == null) {
        LayoutInflater inflator = context.getLayoutInflater();
        convertView = inflator.inflate(R.layout.row, null);
        viewHolder = new ViewHolder();

        viewHolder.text = (TextView) convertView.findViewById(R.id.label);
        viewHolder.text2 = (TextView)convertView.findViewById(R.id.label2);
        viewHolder.checkbox = (CheckBox) convertView.findViewById(R.id.checkBox);

        convertView.setTag(viewHolder);
        convertView.setTag(R.id.label, viewHolder.text);
        convertView.setTag(R.id.checkBox, viewHolder.checkbox);

    } else {
        viewHolder = (ViewHolder) convertView.getTag();
    }

    viewHolder.text.setTextSize(ClasseDiAppoggio.getSize());
    viewHolder.text2.setTextSize(ClasseDiAppoggio.getSize());

    viewHolder.checkbox.setTag(position); // This line is important.
    viewHolder.text.setText(list.get(position).getName());
    viewHolder.text2.setText(list.get(position).getName2());
    viewHolder.checkbox.setChecked(list.get(position).isSelected());

    viewHolder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            int getPosition = (Integer) buttonView.getTag();
            list.get(getPosition).setSelected(buttonView.isChecked()); // Set the value of checkbox to maintain its state.
        }
    });
    final CheckBox chk = (CheckBox)convertView.findViewById(R.id.checkBox);
    final View finalConvertView = convertView;
    globalView = convertView;

    if (position == mCurrentTtsPosition){
        chk.setChecked(true);
    }

    chk.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            int getPosition = (Integer) chk.getTag();


            if (chk.isChecked()) {
                testCheck = true;

                String textPart1 = " ";
                String textPart2 = " ";
                String textToSay = " ";

                TextView label2 = (TextView) finalConvertView.findViewById(R.id.label2);
                TextView label1 = (TextView) finalConvertView.findViewById(R.id.label);


                textPart1 = label2.getText().toString();

                int doItearator = 1;
                if ((getPosition + 1) < list.size()) {
                    boolean testItem = false;
                    do {
                        if ((list.get(getPosition + doItearator).getVersion() == 1)) {
                            textPart2 = list.get(getPosition + doItearator).getName();
                           break;
                         } else {
                            if ((getPosition + 2) == list.size() || (getPosition + 3) == list.size()) {
                                break;
                            }
                            ++doItearator;
                        }
                   } while (testItem == false);
                }

                textToSay = textPart1 +
                        "\n" + "." +
                        "\n" + "." +
                        "\n" + "." +
                        "\n" + "." +
                        "\n" + "." +
                        "\n" + "." +
                        "\n" + "." +
                        "\n" + "." +
                        "\n" + "." +
                        "\n" + "." +
                        "\n" + "." +
                        textPart2;

                OneFragment.startSpeak(textToSay);
            } else {
                testCheck = false;
            }
        }
    });

    return convertView;
}
}

所以代码可行，但问题是当我滚动listview时大小会发生变化。因此，代码中的更改应向下滚动并向上滚动，以便我可以看到文本大小的更改。我该怎么做才能立即做出改变？谢谢，对不好的英语抱歉。

Answer 1

尝试应该有效的youView.invalidate()。

您也可以尝试ListView.invalidateViews()。这会强制列表视图重绘其项目。更改textSize时调用它。

在您的情况下，您可以在fragment_one的listView.invalidateViews()中使用onResume()。或者为了简化，您可以将listView.setAdapter()转移到onResume()，然后就可以了

刷新片段中listView的Item的TextSize

1 个答案: