允许用户在Android中长按一下即可编辑按钮文本

Question

我想允许App用户更改Android中的Button文本。当用户单击按钮时，它应该执行某些操作，但是当他/她长按按钮时，应该弹出一个edittext＆amp;任何用户类型都应保存为按钮文本。        到目前为止，我已经完成了以下事情。

btn1 = (Button) findViewById(R.id.button1);
etLabel = (EditText) findViewById(R.id.etName);

btn1.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                // How to pop-up edittext from here 
                // to allow user change Button name
                btn1.setText(name);
                return true;
            }
        });
    }

    public void onButtonClick(View view) {
        switch (view.getId()) {
            case R.id.button1:
                // do something else here
                break;
    }
 }

Answer 1

您可以create a input dialog从用户那里获取文字

btn1.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {

                builder.show();
                return true;
            }
        });
    }

并设置btn1的文本，如下所示：

builder.setPositiveButton("OK", new DialogInterface.OnClickListener() { 
    @Override
    public void onClick(DialogInterface dialog, int which) {
       btn1.setText(input.getText().toString());
    }
});

Answer 2

尝试这样：

public class SOdemoAcitvity extends AppCompatActivity {

private Button btn;
private EditText edit;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.so_demo);
    btn = (Button) findViewById(R.id.btn_demo);
    edit = (EditText) findViewById(R.id.edit_text);

    btn.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            showDialog(edit.getText().toString());

            return true;
        }


    });
}

private void showDialog(String str) {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("input text");
    View view = LayoutInflater.from(this).inflate(R.layout.dialog_view, null);
    final EditText edit_dialog = (EditText) view.findViewById(R.id.edit_dialog);
    edit_dialog.setText(str);
    builder.setView(view);
    builder.setNegativeButton("cancel",null);
    builder.setPositiveButton("confirm", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
                    btn.setText(edit_dialog.getText().toString());
        }
    });
    builder.show();
}
}

dialog_view xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="wrap_content">

<EditText
android:id="@+id/edit_dialog"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>

然后