获取“编辑文本”字段的值-Java 学习之路

396

我正在学习如何创建UI元素 . 我创建了一些EditText输入字段 . 在单击按钮时，我想捕获输入到该输入字段的内容 .

<EditText android:id="@+id/name" android:width="220px" />

那是我的领域 . 我怎样才能获得内容？

10 回答

0
我喜欢快捷方式，所以我这样做 .

getText（editText）;
的getText（按钮）;
的getText（TextView的）;

如果你没有，只需在你的BaseActivity / create BaseActivity中创建方法 .
```
public class BaseActivity extends AppCompatActivity{
    public String getText(TextView tv) {
        return tv.getText().toString().trim();
    } 
}
```
并通过此BaseActivity扩展您的所有活动 .
```
public class YourActivity extends BaseActivity {
  @Override
  public void onCreate(Bundle savedInstanceState){
     getText(editText);
     getText(button);
     getText(textView);
  }
}
```
注意 EditText ， Button 扩展 TextView ，所以我只创建了 getText(TextView tv) .
回复于 2024-04-28T20:10:42+08:00

通过使用getText（）：

Button   mButton;
EditText mEdit;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    mButton = (Button)findViewById(R.id.button);
    mEdit   = (EditText)findViewById(R.id.edittext);

    mButton.setOnClickListener(
        new View.OnClickListener()
        {
            public void onClick(View view)
            {
                Log.v("EditText", mEdit.getText().toString());
            }
        });
}

回复于 2024-04-28T20:10:42+08:00

10

我猜你在调用你的EditText对象的“mEdit”时必须使用这段代码：

myActivity.this.mEdit.getText().toString()

只需确保编译器知道要调用和使用哪个 EditText .

回复于 2024-04-28T20:10:42+08:00
9
从android中的 EditText 控件获取值 . EditText getText 属性用于获取值 EditText ：
```
EditText txtname = (EditText)findViewById(R.id.name);
String name      =  txtname.getText().toString();
```
回复于 2024-04-28T20:10:42+08:00

public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

  Button  rtn = (Button)findViewById(R.id.button);
  EditText edit_text   = (EditText)findViewById(R.id.edittext1);

    rtn .setOnClickListener(
        new View.OnClickListener()
        {
            public void onClick(View view)
            {
                Log.v("EditText value=", edit_text.getText().toString());
            }
        });
}

回复于 2024-04-28T20:10:42+08:00

5
我希望这个应该有效：
```
Integer.valueOf(mEdit.getText().toString());
```
我尝试了 Integer.getInteger() 方法而不是 valueOf() - 它没有用 .
回复于 2024-04-28T20:10:42+08:00

629

您可能还想看一下Butter Knife . 它旨在通过使用注释减少样板代码的数量 . 这是一个简单的例子：

public class ExampleActivity extends ActionBarActivity {

    @InjectView(R.id.name)
    EditText nameEditText;

    @InjectView(R.id.email)
    EditText emailEditText;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_example);
        Butterknife.inject(this);
    }

    @OnClick(R.id.submit)
    public void onSubmit() {
         Editable name = nameEditText.getText();
         Editable email = emailEditText.getText();
    }
}

只需将以下依赖项添加到 build.gradle ：

compile 'com.jakewharton:butterknife:x.y.z'

作为替代方案，也有AndroidAnnotations .

回复于 2024-04-28T20:10:42+08:00

-6

更高级的方法是使用butterknife bindview . 这消除了冗余代码 .

在你的依赖关系中;添加这2行 .

compile('com.jakewharton:butterknife:8.5.1') {
        exclude module: 'support-compat'
    }
apt 'com.jakewharton:butterknife-compiler:8.5.1'

然后同步 . MainActivity中绑定edittext的示例

import butterknife.BindView;   
import butterknife.ButterKnife; 

public class MainActivity {

@BindView(R.id.name) EditTextView mName; 
...

   public void onCreate(Bundle savedInstanceState){
         ButterKnife.bind(this); 
         ...
   }

}

但是，一旦您感觉更舒服或开始使用大量数据，这是另一种选择 .

回复于 2024-04-28T20:10:42+08:00

试试这个代码

final EditText editText = findViewById(R.id.name); // your edittext id in xml
Button submit = findViewById(R.id.submit_button); // your button id in xml
submit.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) 
    {
        String string = editText.getText().toString();
        Toast.makeText(MainActivity.this, string, Toast.LENGTH_SHORT).show();
    }
});

回复于 2024-04-28T20:10:42+08:00

Button kapatButon = (Button) findViewById(R.id.islemButonKapat);
    Button hesaplaButon = (Button) findViewById(R.id.islemButonHesapla);
    Button ayarlarButon = (Button) findViewById(R.id.islemButonAyarlar);

    final EditText ders1Vize = (EditText) findViewById(R.id.ders1Vize);
    final EditText ders1Final = (EditText) findViewById(R.id.ders1Final);
    final EditText ders1Ortalama = (EditText) findViewById(R.id.ders1Ortalama);

    //

    final EditText ders2Vize = (EditText) findViewById(R.id.ders2Vize);
    final EditText ders2Final = (EditText) findViewById(R.id.ders2Final);
    final EditText ders2Ortalama = (EditText) findViewById(R.id.ders2Ortalama);
    //
    final EditText ders3Vize = (EditText) findViewById(R.id.ders3Vize);
    final EditText ders3Final = (EditText) findViewById(R.id.ders3Final);
    final EditText ders3Ortalama = (EditText) findViewById(R.id.ders3Ortalama);
    //
    final EditText ders4Vize = (EditText) findViewById(R.id.ders4Vize);
    final EditText ders4Final = (EditText) findViewById(R.id.ders4Final);
    final EditText ders4Ortalama = (EditText) findViewById(R.id.ders4Ortalama);
    //
    final EditText ders5Vize = (EditText) findViewById(R.id.ders5Vize);
    final EditText ders5Final = (EditText) findViewById(R.id.ders5Final);
    final EditText ders5Ortalama = (EditText) findViewById(R.id.ders5Ortalama);
    //
    final EditText ders6Vize = (EditText) findViewById(R.id.ders6Vize);
    final EditText ders6Final = (EditText) findViewById(R.id.ders6Final);
    final EditText ders6Ortalama = (EditText) findViewById(R.id.ders6Ortalama);
    //
    final EditText ders7Vize = (EditText) findViewById(R.id.ders7Vize);
    final EditText ders7Final = (EditText) findViewById(R.id.ders7Final);
    final EditText ders7Ortalama = (EditText) findViewById(R.id.ders7Ortalama);
    //

    /*
     * 
     * 
     * */

    kapatButon.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // kapatma islemi
            Toast.makeText(getApplicationContext(), "kapat",
                    Toast.LENGTH_LONG).show();
        }
    });
    /*
     * 
     * 
     * */
    hesaplaButon.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // hesap islemi

            int d1v = Integer.parseInt(ders1Vize.getText().toString());
            int d1f = Integer.parseInt(ders1Final.getText().toString());
            int ort1 = (int) (d1v * 0.4 + d1f * 0.6);
            ders1Ortalama.setText("" + ort1);
            //
            int d2v = Integer.parseInt(ders2Vize.getText().toString());
            int d2f = Integer.parseInt(ders2Final.getText().toString());
            int ort2 = (int) (d2v * 0.4 + d2f * 0.6);
            ders2Ortalama.setText("" + ort2);
            //
            int d3v = Integer.parseInt(ders3Vize.getText().toString());
            int d3f = Integer.parseInt(ders3Final.getText().toString());
            int ort3 = (int) (d3v * 0.4 + d3f * 0.6);
            ders3Ortalama.setText("" + ort3);
            //
            int d4v = Integer.parseInt(ders4Vize.getText().toString());
            int d4f = Integer.parseInt(ders4Final.getText().toString());
            int ort4 = (int) (d4v * 0.4 + d4f * 0.6);
            ders4Ortalama.setText("" + ort4);
            //
            int d5v = Integer.parseInt(ders5Vize.getText().toString());
            int d5f = Integer.parseInt(ders5Final.getText().toString());
            int ort5 = (int) (d5v * 0.4 + d5f * 0.6);
            ders5Ortalama.setText("" + ort5);
            //
            int d6v = Integer.parseInt(ders6Vize.getText().toString());
            int d6f = Integer.parseInt(ders6Final.getText().toString());
            int ort6 = (int) (d6v * 0.4 + d6f * 0.6);
            ders6Ortalama.setText("" + ort6);
            //
            int d7v = Integer.parseInt(ders7Vize.getText().toString());
            int d7f = Integer.parseInt(ders7Final.getText().toString());
            int ort7 = (int) (d7v * 0.4 + d7f * 0.6);
            ders7Ortalama.setText("" + ort7);
            //




            Toast.makeText(getApplicationContext(), "hesapla",
                    Toast.LENGTH_LONG).show();
        }
    });

回复于 2024-04-28T20:10:42+08:00

获取“编辑文本”字段的值

10 回答

我喜欢快捷方式，所以我这样做 .

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