清除所有字段

Question

我有4場和2個按鈕，其中一個按鈕復位時，我想，當我點擊按鈕，它會清除所有字段

Answer 1

一個簡單的例子：

public class MyActivity extends AppCompatActivity{ 
    private EditText editText1, editText2, editText3, editText4; 
    private Button btn_reset; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_layout); 

     //javaVariable = (Cast type) findViewById(R.id.IdFromXML); 
     editText1 = (EditText) findViewById(R.id.editText1); 
     editText2 = (EditText) findViewById(R.id.editText2); 
     editText3 = (EditText) findViewById(R.id.editText3); 
     editText4 = (EditText) findViewById(R.id.editText4); 
     btn_reset = (Button) findViewById(R.id.btn_reset); 

     btn_reset.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       //Here's the actions to do when btn_reset is clicked 
       editText1.setText(""); 
       editText2.setText(""); 
       editText3.setText(""); 
       editText4.setText(""); 
      } 
     }); 
    } 
} 

Answer 2

創建onClickListener到復位按鈕

Button resetButton = (Button) findViewById(R.id.reset); 
resetButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(final View arg1) { 
       textView1.setText(null);//use editText if fields are EditText 
       textView2.setText(null); 
       textView3.setText(null); 
       textView4.setText(null); 
       } 
     }); 

您可以在AutoCompleteTextView,EditText和TextView上使用此方法。