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步骤:
1.定义自定义的Dialog的布局文件
2.写一个类MyDialog继承Dialog
3.Dialog 返回值到Activity的方法是定义一个接口,接口中定义返回值到Activity的方法,MyDialog实现这个接口,然后在需要的位置调用接口中的方法,Activity实现这个接口,
重写接口的方法
代码如下
return_code_dialog.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" android:padding="10dp" android:background="@color/white" android:weightSum="1"> <TextView android:id="@+id/title" android:layout_width="321dp" android:layout_height="wrap_content" android:textColor="@color/black" android:textSize="24dp"/> <View android:layout_width="match_parent" android:layout_height="1px" android:background="@color/black" /> <TextView android:id="@+id/content" android:layout_marginTop="10dp" android:layout_width="305dp" android:layout_gravity="center" android:textColor="@color/viewfinder_mask" android:layout_height="wrap_content" android:textSize="18dp"/> <LinearLayout android:layout_width="match_parent" android:layout_marginTop="10dp" android:layout_height="wrap_content" android:orientation="horizontal"> <EditText android:layout_width="0dp" android:layout_weight="1" android:gravity="center" android:textSize="20dp" android:password="true" android:layout_height="50dp" android:background="@drawable/bg_edit_normal" android:id="@+id/psw_1" android:digits="1234567890"/> <EditText android:layout_width="0dp" android:layout_weight="1" android:layout_height="50dp" android:background="@drawable/bg_edit_normal" android:id="@+id/psw_2" android:password="true" android:gravity="center" android:textSize="20dp" android:digits="1234567890" /> <EditText android:layout_width="0dp" android:layout_weight="1" android:layout_height="50dp" android:background="@drawable/bg_edit_normal" android:id="@+id/psw_3" android:password="true" android:gravity="center" android:textSize="20dp" android:digits="1234567890" /> <EditText android:layout_width="0dp" android:layout_weight="1" android:layout_height="50dp" android:background="@drawable/bg_edit_normal" android:id="@+id/psw_4" android:password="true" android:gravity="center" android:textSize="20dp" android:digits="1234567890" /> <EditText android:layout_width="0dp" android:layout_weight="1" android:layout_height="50dp" android:background="@drawable/bg_edit_normal" android:id="@+id/psw_5" android:password="true" android:gravity="center" android:textSize="20dp" android:digits="1234567890" /> <EditText android:layout_width="0dp" android:layout_weight="1" android:layout_height="50dp" android:background="@drawable/bg_edit_normal" android:id="@+id/psw_6" android:password="true" android:gravity="center" android:textSize="20dp" android:digits="1234567890" /> </LinearLayout> </LinearLayout>
interface MyJudgePasswordInterface
public interface MyJudgePasswordInterface { public void returnJudgePasswordResult(boolean result); }
PasswordDialog.java
package com.example.administrator.bigelephantbike; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.text.Editable; import android.text.TextWatcher; import android.util.Log; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.inputmethod.EditorInfo; import android.widget.EditText; import android.widget.TextView; import org.w3c.dom.Text; /** * Created by Administrator on 2016/4/3. */ public class PasswordDialog extends Dialog implements TextWatcher,View.OnKeyListener{ private Context context; private String title; private String content; private TextView titleTextView; private TextView contentTextVIew; private EditText eidtText1; private EditText eidtText2; private EditText eidtText3; private EditText eidtText4; private EditText eidtText5; private EditText eidtText6; private String password; private int current=0; private String[]passwordInput =new String[6]; private int maxLen =1;//限制EditText的输入长度 private MyJudgePasswordInterface myJudgePasswordInterface; public PasswordDialog(Context context) { super(context); } public PasswordDialog(Context context, int themeResId) { super(context, themeResId); } public PasswordDialog(Context context,String title,String content,String password,MyJudgePasswordInterface myJudgePasswordInterface){ super(context,R.style.add_dialog); this.context =context; this.title=title; this.content =content; this.password =password; this.myJudgePasswordInterface =myJudgePasswordInterface; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); init(); } void init(){ LayoutInflater inflater = LayoutInflater.from(context); View view = inflater.inflate(R.layout.return_code_dialog, null); setContentView(view); titleTextView =(TextView)findViewById(R.id.title); contentTextVIew=(TextView)findViewById(R.id.content); eidtText1 =(EditText)findViewById(R.id.psw_1); eidtText2 =(EditText)findViewById(R.id.psw_2); eidtText3 =(EditText)findViewById(R.id.psw_3); eidtText4 =(EditText)findViewById(R.id.psw_4); eidtText5 =(EditText)findViewById(R.id.psw_5); eidtText6 =(EditText)findViewById(R.id.psw_6); titleTextView.setText(title); contentTextVIew.setText(content); //锁定数字键盘 eidtText1.setInputType(EditorInfo.TYPE_CLASS_NUMBER); eidtText2.setInputType(EditorInfo.TYPE_CLASS_NUMBER); eidtText3.setInputType(EditorInfo.TYPE_CLASS_NUMBER); eidtText4.setInputType(EditorInfo.TYPE_CLASS_NUMBER); eidtText5.setInputType(EditorInfo.TYPE_CLASS_NUMBER); eidtText6.setInputType(EditorInfo.TYPE_CLASS_NUMBER); //添加内容改变的事件监听 eidtText1.addTextChangedListener(this); eidtText2.addTextChangedListener(this); eidtText3.addTextChangedListener(this); eidtText4.addTextChangedListener(this); eidtText5.addTextChangedListener(this); eidtText6.addTextChangedListener(this); eidtText1.setOnKeyListener(this); eidtText2.setOnKeyListener(this); eidtText3.setOnKeyListener(this); eidtText4.setOnKeyListener(this); eidtText4.setOnKeyListener(this); eidtText5.setOnKeyListener(this); eidtText6.setOnKeyListener(this); } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { int length = 0; //Log.d("test","current="+current+"我变了"); switch (current) { case 0: length = eidtText1.getText().length(); changeFocus(length, eidtText2); passwordInput[0] = eidtText1.getText().toString(); break; case 1: length = eidtText2.getText().length(); changeFocus(length, eidtText3); passwordInput[1] = eidtText2.getText().toString(); break; case 2: length = eidtText3.getText().length(); changeFocus(length, eidtText4); passwordInput[2] = eidtText3.getText().toString(); break; case 3: length = eidtText4.getText().length(); changeFocus(length, eidtText5); passwordInput[3] = eidtText4.getText().toString(); break; case 4: length = eidtText5.getText().length(); changeFocus(length, eidtText6); passwordInput[4] = eidtText5.getText().toString(); break; case 5: length = eidtText6.getText().length(); if (length >= 1) { passwordInput[5] = eidtText6.getText().toString(); myJudgePasswordInterface.returnJudgePasswordResult(validatePassword()); this.cancel(); } } } @Override public void afterTextChanged(Editable s) { } void changeFocus(int l,EditText editText){ if(l >= maxLen){ current++; editText.setFocusable(true); editText.setFocusableInTouchMode(true); editText.requestFocus(); editText.findFocus(); } } boolean validatePassword(){ current=0; StringBuffer stringBuffer=new StringBuffer(); for(int i=0;i<passwordInput.length;i++){ stringBuffer.append(passwordInput[i]); } String psw =stringBuffer.toString(); return psw.equals(password); } @Override public boolean onKey(View v, int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_DEL && event.getAction() == KeyEvent.ACTION_DOWN) { current--; switch(current){ case 0:eidtText1.setText("");requestF(eidtText1);break; case 1:eidtText2.setText("");requestF(eidtText2);break; case 2:eidtText3.setText("");requestF(eidtText3);break; case 3:eidtText4.setText("");requestF(eidtText4);break; case 4:eidtText5.setText("");requestF(eidtText5);break; case 5:eidtText6.setText("");requestF(eidtText6);break; } } return false; } void requestF(EditText editText){ editText.setFocusable(true); editText.setFocusableInTouchMode(true); editText.requestFocus(); editText.findFocus(); } }
ChargeActivity.java
package com.example.administrator.bigelephantbike; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.Intent; import android.os.Bundle; import android.text.TextWatcher; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; import wheelview.ArrayWheelAdapter; import wheelview.OnWheelChangedListener; import wheelview.WheelView; public class ChargeActivity extends Activity implements OnWheelChangedListener,View.OnClickListener{ private Button recoverBtn; private String passwordReturn="123456"; private String passwordRecover="234567"; private PasswordDialog myDialog; //密码输入是否正确 private boolean pswResult; //实现MyJudgePasswordInterface private MyJudgePasswordInterface myJudgePasswordInterface; //1标识输入的是还车密码,2表示输入的是恢复密码 private int flag=0; private String []nums={"0","1","2","3","4","5","6","7","8","9"}; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_charge); returnBtn =(Button)findViewById(R.id.return_btn); recoverBtn =(Button)findViewById(R.id.recover_btn); myJudgePasswordInterface=new MyJudgePasswordInterface() { @Override public void returnJudgePasswordResult(boolean result) { pswResult = result;
}
}; returnBtn.setOnClickListener(this); recoverBtn.setOnClickListener(this); } @Override public void onClick(View v) { //当点击还车按钮时 if(v.getId()==R.id.return_btn){ flag=1; myDialog =new PasswordDialog(ChargeActivity.this,this.getResources().getString(R.string.input_return_code),this.getResources().getString(R.string.return_tips),passwordReturn,myJudgePasswordInterface); myDialog.show(); } if(v.getId()==R.id.recover_btn){ flag=2; myDialog=new PasswordDialog(ChargeActivity.this,this.getResources().getString(R.string.input_recover_tips),this.getResources().getString(R.string.recover_tips),passwordRecover,myJudgePasswordInterface); myDialog.show(); } } }
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原文地址:http://www.cnblogs.com/rainhome/p/5351200.html