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[转载]Android 常用dialog提示对话框 – Livingstone – 博客园.
在Android应用程序中，经常需要用到dialog对话框让用户知道现在所在进行的操作(比如耗时的操作)，或者提示某些信息和状态等，算是比较常用的一个知识点；
1、简单对话框
protected void dialog1(AlertDialog.Builder builder) { builder.setTitle("标题"); builder.setPositiveButton("确定", null); builder.setIcon(R.drawable.ic_launcher); builder.setMessage("简单消息框"); builder.show(); }
2、带自定义内容对话框
protected void study2(AlertDialog.Builder builder) { builder.setTitle("标题"); builder.setView(new EditText(this)); builder.setPositiveButton("确定", null); builder.setIcon(android.R.drawable.ic_dialog_info); builder.setMessage("简单消息框"); builder.show(); }
3、带单选按钮对话框
protected void study3(AlertDialog.Builder builder) { builder.setTitle("请选择") .setIcon(android.R.drawable.ic_dialog_info) .setSingleChoiceItems( new String[] { "item1", "item2", "item3", "item4" }, 0, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Log.e("选择", "" + which); dialog.dismiss(); } }).setNegativeButton("取消", null).show(); }
在选择了某一项之后，onClick回调事件会把选择的项的索引返回给用户；
4、带多选组合框对话框
protected void study4(AlertDialog.Builder builder) { builder.setTitle("请选择") .setIcon(android.R.drawable.ic_dialog_info) .setMultiChoiceItems( new String[] { "item1", "item2", "item3", "item4" }, new boolean[] { true, true, false, true }, new OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialog, int which, boolean isChecked) { ListView lv = ((AlertDialog) dialog).getListView(); Log.e("项" + which, "选择" + lv.getCheckedItemPositions().get(which)); } }).setNegativeButton("取消", null).show(); }
在多选对话框中，选择了某一项并不会导致对话框隐藏，同样Android也通过回调接口返回用户所选择的项；
5、进度条对话框
public void study5() { ProgressDialog dialog = new ProgressDialog(MainActivity.this); dialog.setCancelable(true); dialog.setMessage("加载中..."); // dialog.setTitle("进度条框窗口"); // dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); // dialog.setMax(100); dialog.show(); }
6、除了上述的添加用户界面友好提示的方法，还可以通过WindowManager添加一个View到界面上向用户反馈信息，此种方法也更灵活
protected void study6() { ViewGroup vg = (ViewGroup) getLayoutInflater().inflate(R.layout.dia,null); pb = (ProgressBar) vg.findViewById(R.id.pb); vg.removeAllViews(); WindowManager.LayoutParams lp = new WindowManager.LayoutParams(160, 160, WindowManager.LayoutParams.TYPE_APPLICATION, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT); WindowManager windowManager = (WindowManager)getSystemService(Context.WINDOW_SERVICE); windowManager.addView(pb, lp); }
重要的步骤即是从lp开始，设置LayoutParams参数，然后添加到窗口；
