Question

我正在尝试通过ListView设置EditText的文本。一旦用户从ListView中选择产品，它将返回到包含EditText的活动，并更改EditText中的文本。

我对Android和Java相对较新，所以请原谅我是一个绝对的小结。

列出Java：

        final ListView listViewCPU = (ListView) findViewById(R.id.listViewCPU);
    listViewCPU.setChoiceMode(ListView.CHOICE_MODE_SINGLE);

    String CPUList[] = {

    "Products go here", "Products go here", "Products go here", "Products go here", "Products go here", "Products go here" };

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, CPUList);

    listViewCPU.setAdapter(adapter);

    listViewCPU.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> listview, View myView,
                int pos, long mylng) {
            String CPU = (String) listview.getAdapter().getItem(pos);

            Intent i = new Intent(getApplicationContext(), ListmenuActivity.class);
            i.putExtra(" ", CPU);
            startActivity(i);

        }
    });

}
}

EditText Java：我收到错误“EditText4”定义“令牌上的语法错误”EditText4“，删除此令牌”

        EditText CPU = (EditText) findViewById(R.id.autoCompleteTextView4);
    CPU.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub

            Intent CPUList = new Intent(getApplicationContext(),
                    CPUList.class);
            startActivityForResult(CPUList, 0); 
        }

        Intent i = getIntent();
        String product = i.getStringExtra(" ");
        EditText CPU = ((EditText)findViewById(R.id.EditText4));
        EditText4.setText(getIntent(i).getStringExtra(""));

    });

Answer 1

CPU.setText不是EditText4因为你没有真正定义（只要我能看到）

Answer 2

EditText CPU = ((EditText)findViewById(R.id.EditText4));

你在这一行上缺少一个分号：）

Answer 3

你这样设置

    @Override
    public void onItemClick(AdapterView<?> listview, View myView,
            int pos, long mylng) {
        String CPU = (String) listview.getAdapter().getItem(pos);

        Intent i = new Intent(getApplicationContext(), ListmenuActivity.class);
        i.putExtra("key", CPU);
        startActivity(i);

    }
});

获得类似的值

    Intent i = getIntent();
    String product = i.getStringExtra("key");
    EditText CPU = ((EditText)findViewById(R.id.EditText4));
    CPU.setText(product);

设置EditText的数据不起作用

3 个答案: