将字符串或变量从对话框传递到活动Android

// 创建对话框
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("输入字符串");

// 创建文本输入框
final EditText editText = new EditText(this);
builder.setView(editText);

// 设置确认按钮
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        String inputText = editText.getText().toString();

        // 创建Intent对象
        Intent intent = new Intent(CurrentActivity.this, TargetActivity.class);
        intent.putExtra("input", inputText);

        // 启动目标活动
        startActivity(intent);
    }
});

// 显示对话框
builder.show();

String inputText = getIntent().getStringExtra("input");