android人人网登陆例子研究

eoe上有源码,点击一个自定义图片按钮控件，弹出自定义的一个dialog..内含输入框可登陆.

自定的图片按钮：ConnectButton.java

对话框：RenrenDialog.java

 

传值
Bundle bundle=new Bundle();bundle.putString("store", "数据来自Activity1");Intent mIntent=new Intent();
mIntent.putExtras(bundle);

获取
Bundle extras=getIntent().getExtras();

if(extras!=null){data=extras.getString("store");}

 

Dialog

//根据不同事件弹出不同的窗口
//showDialog(dialog)时调用这里
@Override
	protected Dialog onCreateDialog(int id) {
		switch (id) {
		case DIALOG1:
			return buildDialog1(ActivityMain.this);

		case DIALOG2:
			return buildDialog2(ActivityMain.this);

		case DIALOG3:
			return buildDialog3(ActivityMain.this);
		case DIALOG4:
			return buildDialog4(ActivityMain.this);

		}
		return null;
	}
protected void onPrepareDialog(int id, Dialog dialog){
		if(id==DIALOG1){
			setTitle("测试");
		}

//这里很奇怪,好像是窗口打开时运行的东西，判断某个为dialog1时改变标题(嗯，)
	}
Button button1 = (Button) findViewById(R.id.button1);
		button1.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				showDialog(DIALOG1);
			}
		});

		Button buttons2 = (Button) findViewById(R.id.buttons2);
		buttons2.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				showDialog(DIALOG2);
			}
		});
//。。其他button

private Dialog buildDialog1(Context context) {
		AlertDialog.Builder builder = new AlertDialog.Builder(context);
		builder.setIcon(R.drawable.alert_dialog_icon);
		builder.setTitle(R.string.alert_dialog_two_buttons_title);
		builder.setPositiveButton(R.string.alert_dialog_ok,
				new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int whichButton) {

						setTitle("点击了对话框上的确定按钮");
					}
				});
		builder.setNegativeButton(R.string.alert_dialog_cancel,
				new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int whichButton) {

						setTitle("点击了对话框上的取消按钮");
					}
				});
		return builder.create();

	}//弹出窗口信息

private Dialog buildDialog3(Context context) {
  LayoutInflater inflater = LayoutInflater.from(this);
  final View textEntryView = inflater.inflate(//在dialog内放入实例化的view，定义所需的内容，如登录信息等
    R.layout.alert_dialog_text_entry, null);
  AlertDialog.Builder builder = new AlertDialog.Builder(context);
  builder.setIcon(R.drawable.alert_dialog_icon);
  builder.setTitle(R.string.alert_dialog_text_entry);
  builder.setView(textEntryView);
  builder.setPositiveButton(R.string.alert_dialog_ok,
    new DialogInterface.OnClickListener() {
     public void onClick(DialogInterface dialog, int whichButton) {
      setTitle("点击了对话框上的确定按钮");
     }
    });
  builder.setNegativeButton(R.string.alert_dialog_cancel,
    new DialogInterface.OnClickListener() {
     public void onClick(DialogInterface dialog, int whichButton) {
      setTitle("点击了对话框上的取消按钮");
     }
    });
  return builder.create();
 }
 private Dialog buildDialog4(Context context) {
  ProgressDialog dialog = new ProgressDialog(context);//Loading 之前都是alertDialog，这里是ProgressDialog
  dialog.setTitle("正在下载歌曲");
  dialog.setMessage("请稍候……");
  return  dialog;
 }

待续