Question

我正在创建一个动态布局，其中我有2个EditText和一个Button。点击一个按钮，就会创建一个新的同一个布局王。我想，当我点击按钮时，我应该能够从edittexts获取数据并存储它们然后添加新的布局。我无法从edittext获取数据，它是空白的。以下是我的代码。我还添加了我的布局

的屏幕截图

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        ll_newView = (LinearLayout)findViewById(R.id.ll_newView);
        scrollView = (ScrollView)findViewById(R.id.scrollView);
        bt_addView = (Button)findViewById(R.id.bt_addView);




        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.MATCH_PARENT);
        LinearLayout one = new LinearLayout(MainActivity2.this);


        //=====First EditText======//
        params.weight = 5.0f;
        params.setMargins(16,8,8,16);
        EditText  et_one = new EditText(MainActivity2.this);
        et_one.setPadding(10,10,10,10);
        et_one.setHint("Edit Text 1");
        et_one.setBackground(getResources().getDrawable(R.drawable.edit_text_border));
        et_one.setLayoutParams(params);
        one.addView(et_one);

        //=====Second EditText======//
        EditText  et_two = new EditText(MainActivity2.this);
        et_two.setPadding(10,10,10,10);
        et_two.setHint("Edit Text 2");
        et_two.setBackground(getResources().getDrawable(R.drawable.edit_text_border));
        et_two.setLayoutParams(params);
        one.addView(et_two);


        Button bt_plus = new Button(MainActivity2.this);
        bt_plus.setText("+");


        one.addView(bt_plus);


        ll_newView.addView(one);

        bt_plus.setOnClickListener(getOnClickDoSomething(et_one.getText().toString().trim(),et_two.getText().toString().trim()));


    }

    View.OnClickListener getOnClickDoSomething(final String one1,final String two1)  {
        return new View.OnClickListener() {
            public void onClick(View v) {
                LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                        LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.MATCH_PARENT);

                LinearLayout one = new LinearLayout(MainActivity2.this);
                Log.e("========","=====one ="+one1+"=========two = "+two1);
                //=====First EditText======//
                params.weight = 5.0f;
                params.setMargins(16,8,8,16);
                EditText  et_one = new EditText(MainActivity2.this);
                et_one.setPadding(10,10,10,10);
                et_one.setHint("Edit Text 1");
                et_one.setBackground(getResources().getDrawable(R.drawable.edit_text_border));
                et_one.setLayoutParams(params);
                one.addView(et_one);

                //=====Second EditText======//
                EditText  et_two = new EditText(MainActivity2.this);
                et_two.setPadding(10,10,10,10);
                et_two.setHint("Edit Text 2");
                et_two.setBackground(getResources().getDrawable(R.drawable.edit_text_border));
                et_two.setLayoutParams(params);
                one.addView(et_two);


                Button bt_plus = new Button(MainActivity2.this);
                bt_plus.setText("+");

                one.addView(bt_plus);



                ll_newView.addView(one);

                bt_plus.setOnClickListener(getOnClickDoSomething(et_one.getText().toString().trim(),et_two.getText().toString().trim()));
                Log.e("========","=====one ="+et_one.getText().toString().trim()+"=========two = "+ et_two.getText().toString().trim());

            }
        };
    }

Answer 1

您正在向getOnClickDoSomething函数传递新创建的editText的文本，因此可以理解它将是空白的。您可能想要的是更改getOnClickDoSomething，以便它接受对editTexts本身的引用，稍后您可以检索它们的当前文本。（您必须小心不要泄漏视图，因为您有匿名类持有视图。）
示例：只需更改以下行，如下所示

bt_plus.setOnClickListener(getOnClickDoSomething(et_one, et_two)); }


View.OnClickListener getOnClickDoSomething(final EditText one1,final EditText two1) 


Log.e("========","=====one ="+one1.getText().toString().trim(),+"=========two = "+two1.getText().toString().trim());

单击按钮从动态创建的EditText中获取文本

1 个答案: