类似支付宝的6个密码输入框

Myth丶恋晨 2022-08-06 15:24 127阅读 0赞

重写一个横向的线性布局，6个输入框，平均每个权重1

设置密码输入属性：

tv.setInputType(InputType.TYPE_CLASS_TEXT
    					| InputType.TYPE_TEXT_VARIATION_PASSWORD);

还不够，需要限制成只能数字输入，让他只能输入0-9数字，需要是使用：

tv.setKeyListener(new NumberKeyListener() {
    
    				protected char[] getAcceptedChars() {
    					char[] numberChars = { '1', '2', '3', '4', '5', '6', '7','8', '9', '0' };
    					return numberChars;
    				}
    
    				@Override
    				public int getInputType() {
    					return InputType.TYPE_CLASS_NUMBER;
    				}
    			});

输入或删除后，让他调到下一个edittext即可。

import java.util.ArrayList;
    import java.util.List;
    
    import android.annotation.SuppressLint;
    import android.content.Context;
    import android.text.Editable;
    import android.text.InputType;
    import android.text.TextWatcher;
    import android.text.method.NumberKeyListener;
    import android.util.AttributeSet;
    import android.view.Gravity;
    import android.view.KeyEvent;
    import android.view.View;
    import android.widget.EditText;
    import android.widget.LinearLayout;
    
    @SuppressLint("NewApi")
    public class PassworldTextView extends LinearLayout {
    	private Context mcontext;
    	private static final int PWDLENGTH = 6;// 密码长度
    
    	private static List<EditText> views;
    
    	public PassworldTextView(Context paramContext) {
    		super(paramContext);
    		init(paramContext);
    	}
    
    	public PassworldTextView(Context paramContext,
    			AttributeSet paramAttributeSet) {
    		super(paramContext, paramAttributeSet);
    		init(paramContext);
    	}
    
    	public PassworldTextView(Context paramContext,
    			AttributeSet paramAttributeSet, int paramInt) {
    		super(paramContext, paramAttributeSet, paramInt);
    		init(paramContext);
    	}
    
    	public String getText() {
    		 StringBuffer sb = new StringBuffer();
    		 for (EditText edt : views) {
    		 <span style="white-space:pre">	</span>sb.append(edt.getText().toString());
    		 }
    		 return sb.toString();
    	}
    
    	private void init(Context context) {
    		mcontext = context;
    		this.setOrientation(LinearLayout.HORIZONTAL);
    		removeAllViews();
    		views = new ArrayList<EditText>();
    		for (int i = 0; i < PWDLENGTH; i++) {
    			EditText tv = new EditText(mcontext);
    			tv.setInputType(InputType.TYPE_CLASS_TEXT
    					| InputType.TYPE_TEXT_VARIATION_PASSWORD);
    			// tv.setInputType(InputType.TYPE_CLASS_NUMBER
    			// | InputType.TYPE_TEXT_VARIATION_PASSWORD);
    
    			tv.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
    					LayoutParams.FILL_PARENT, 1));
    			tv.setGravity(Gravity.CENTER);
    			tv.setBackgroundResource(R.drawable.bg_edittext_normal);
    			// tv.setKeyListener(new
    			// // DigitsKeyListener(sign, decimal));
    			// DigitsKeyListener(false, true));
    			tv.setKeyListener(new NumberKeyListener() {
    
    				protected char[] getAcceptedChars() {
    					char[] numberChars = { '1', '2', '3', '4', '5', '6', '7','8', '9', '0' };
    					return numberChars;
    				}
    
    				@Override
    				public int getInputType() {
    					return InputType.TYPE_CLASS_NUMBER;
    				}
    			});
    
    			views.add(tv);
    
    			final int index = i;
    			tv.addTextChangedListener(new TextWatcher() {
    				@Override
    				public void onTextChanged(CharSequence chars, int arg1,
    						int arg2, int arg3) {
    
    				}
    
    				@Override
    				public void beforeTextChanged(CharSequence arg0, int arg1,
    						int arg2, int arg3) {
    
    				}
    
    				@Override
    				public void afterTextChanged(Editable editable) {
    					if (editable.toString().equals("")) {
    						// 删完,光标左移
    						if (index > 0) {
    							EditText edt = views.get(index - 1);
    							reSet(edt);
    						}
    					} else if (editable.length() == 1) {
    						// 写好一个，往后移
    						if (editable.length() == 1 && index < views.size() - 1) {
    							EditText edt = views.get(index + 1);
    
    							// edt.setText("*");
    
    							reSet(edt);
    						}
    					} else {
    						EditText edt = null;
    						for (int j = 0; j < editable.length(); j++) {
    							if ((j + index) < views.size()) {// j!=0 &&
    								edt = views.get(index + j);
    								edt.setText(editable.subSequence(j, j + 1));
    							}
    						}
    						if (edt != null) {
    							reSet(edt);
    						}
    					}
    				}
    			});
    			tv.setOnKeyListener(new OnKeyListener() {
    				@Override
    				public boolean onKey(View arg0, int key, KeyEvent arg2) {
    					EditText edt = (EditText) arg0;
    					if (edt.getText().length() == 0 && index > 0) {
    						edt = views.get(index - 1);
    						reSet(edt);
    					}
    					return false;
    				}
    			});
    			this.addView(tv);
    		}
    	}
    
    	private void reSet(EditText edt) {
    		edt.setFocusable(true);
    		edt.requestFocus();
    		edt.setSelection(edt.length());
    	}
    }