Android 自定义对话框

今天分享下自己模仿淘宝退出时的一个自定义对话框，这个效果在很多地方都有实现，今天就模仿一个，我们来看看效果：

思路：首先ConfirmDialog类继承AlertDialog：这样才会有显示的效果，第二个就是让内容完全覆盖掉，用getWindow.setContentView(layout);layout为自定义的layout，然后show出来就ok。

ConfirmDialog.calss如下：

public class ConfirmDialog extends AlertDialog {
	Context context;
	public Button cancelButton;
	public Button okButton;
	public TextView messageTextView;

	public ConfirmDialog(Context context) {
		super(context);
		this.context = context;
	}

	public ConfirmDialog(Context context, int theme) {
		super(context, theme);
		this.context = context;
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		LinearLayout layout = new LinearLayout(context);
		layout.setGravity(Gravity.CENTER_HORIZONTAL);
		layout.setOrientation(LinearLayout.VERTICAL);
		layout.setBackgroundColor(Color.WHITE);

		messageTextView = BaseView.creatTextView(context, "确认退出吗？");
		LayoutParams messageParams = new LayoutParams(244, LayoutParams.WRAP_CONTENT);
		messageParams.setMargins( 4,24, 0,24);
		messageTextView.setLayoutParams(messageParams);
		layout.addView(messageTextView);

		LinearLayout layout1 = new LinearLayout(context);
		layout1.setOrientation(LinearLayout.HORIZONTAL);

		// noneButton
		LayoutParams btnParams = new LayoutParams(LayoutParams.FILL_PARENT, DensityUtil.dip2px(context, 36));
		btnParams.setMargins(4, 0, 2, 4);
		btnParams.weight = 1;

		cancelButton = BaseView.createGrayButton(context, "取 消");
		cancelButton.setLayoutParams(btnParams);
		cancelButton.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				ConfirmDialog.this.dismiss();
			}
		});
 
		okButton = BaseView.createOrangeButton(context, "确 认");
		LayoutParams okButtonParams = new LayoutParams(LayoutParams.FILL_PARENT,36);
		okButtonParams.weight = 1;
		okButton.setLayoutParams(okButtonParams);

		layout1.addView(cancelButton);
		layout1.addView(okButton);

		layout.addView(layout1);

		getWindow().setContentView(layout);
	}

	@Override
	public void show() {
		super.show();
	}
}

关键是这句话：getWindow().setContentView(layout);

使用：

ConfirmDialog confirmDialog = new ConfirmDialog(context);confirmDialog.show();
			      confirmDialog.okButton.setOnClickListener(new OnClickListener() {
					@Override
					public void onClick(View v) {
						//ok操作
					}
				});