DialogCopy.java

package net.coding.program.common;

import android.content.Context;
import android.support.v7.app.AlertDialog;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import net.coding.program.R;
import net.coding.program.maopao.MaopaoListBaseFragment;

/**
 * Created by chaochen on 15/1/29.
 */
public class DialogCopy {

    private static View.OnLongClickListener onLongClickListener;

    public static View.OnLongClickListener getInstance() {
        if (onLongClickListener == null) {
            onLongClickListener = v -> {
                AlertDialog.Builder builder = new AlertDialog.Builder(v.getContext());
                builder.setItems(R.array.message_action_text_copy, (dialog, which) -> {
                    if (which == 0) {
                        TextView textView = (TextView) v;
                        Context context = v.getContext();
                        Object dataString = textView.getTag(MaopaoListBaseFragment.TAG_COMMENT_TEXT);
                        String text;
                        if (dataString instanceof String) {
                            text = (String) dataString;
                        } else {
                            text = textView.getText().toString();
                        }

                        Global.copy(context, text);
                        Toast.makeText(context, "已复制", Toast.LENGTH_SHORT).show();
                    }
                }).show();

                return true;
            };
        }

        return onLongClickListener;
    }
}