Android 自定义对话框使用静态Handler传递参数

浏览数：34 / 时间：2015年06月11日

JsdMainDialog.java

package com.jsd.demo;

import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

/**
 *
 * @author jiangshide
 *
 */
public class JsdMainDialog extends Activity {
 
 private Context mContext;
 
 private Button mSub;
 private TextView mResultValue;
 
 public static Handler handler = new Handler();
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        getViewById();
    }
   
    public void getViewById(){
     mContext = this;
     mSub = (Button) this.findViewById(R.id.sub);
     mResultValue = (TextView) this.findViewById(R.id.resultValue);
     mResultValue.setText("没有通过Handler处理");
     mSub.setOnClickListener(listener);
    }
   
    private OnClickListener listener = new OnClickListener() {
  @Override
  public void onClick(View v) {
   switch (v.getId()) {
   case R.id.sub:
    final String flag = "rqbackvalue";
    DialogCustomer  dc = new DialogCustomer(mContext,flag);
    dc.show();
    handler = new Handler(){
     public void handleMessage(Message msg) {
      String resultFlag = msg.getData().getString("flags");
      if(resultFlag.equalsIgnoreCase(flag)){
       mResultValue.setText("这是通过Handler处理过后来显示数据的");
       mResultValue.setTextColor(Color.CYAN);
       mResultValue.setTextSize(30);
      }
     };
    };
    break;

   default:
    break;
   }
  }
 };
}

DialogCustomer.java:

package com.jsd.demo;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.os.Message;
import android.view.View;
import android.widget.Button;

/**
 *
 * @author jiangshide
 *
 */
public class DialogCustomer extends Dialog {

 private Context mContext;
 
 private Button ok;
 String flag;
 
 public DialogCustomer(Context c,String flag) {
  super(c);
  this.mContext = c;
  this.flag = flag;
 }

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.dialog);
  getViewById();
 }
 
 public void getViewById(){
  ok = (Button) this.findViewById(R.id.dialog_ok);
  ok.setOnClickListener(listener);
 }
 
 private android.view.View.OnClickListener listener = new android.view.View.OnClickListener() {
  @Override
  public void onClick(View v) {
   switch (v.getId()) {
   case R.id.dialog_ok:
    Message msg = new Message();//获取设置一个信息保存点
    msg.what=1;
    msg.getData().putString("flags", flag);
    JsdMainDialog.handler.sendMessage(msg);//把数据放进LOOPER队列里
    dismiss();
    break;
   }
  }
 };
}

dialog.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical"
  >
  <TextView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="当返回时把参数传递过去并执行判断后的操作"
   />
  <Button
   android:id="@+id/dialog_ok"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content" 
   android:text="请点击"
   />
</LinearLayout>