自定义Dialog之信息提示

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对话框对于应用也是必不可少的一个组件，在Android中也不例外，对话框对于一些提示重要信息，或者一些需要用户额外交互的一些内容很有帮助。

自定义Dialog步骤： 
1、主要创建Java类,并继承Dialog 
2、创建布局文件来加载和一些样式文件

效果图： 

                   

            

DialogBox.java

public class DialogBox extends Dialog {

    public DialogBox(Context context) {
        super(context);
    }

    public DialogBox(Context context, int theme) {
        super(context, theme);
    }

    public static class Builder {
        private Context context;
        private String title;
        private String message;
        private String positiveButtonText;
        private String negativeButtonText;
        private View contentView;
        private DialogInterface.OnClickListener positiveButtonClickListener;
        private DialogInterface.OnClickListener negativeButtonClickListener;

        public Builder(Context context) {
            this.context = context;
        }

        public Builder setMessage(String message) {
            this.message = message;
            return this;
        }

        /**
         * Set the Dialog message from resource
         *
         * @param title
         * @return
         */
        public Builder setMessage(int message) {
            this.message = (String) context.getText(message);
            return this;
        }

        /**
         * Set the Dialog title from resource
         *
         * @param title
         * @return
         */
        public Builder setTitle(int title) {
            this.title = (String) context.getText(title);
            return this;
        }

        /**
         * Set the Dialog title from String
         *
         * @param title
         * @return
         */

        public Builder setTitle(String title) {
            this.title = title;
            return this;
        }

        public Builder setContentView(View v) {
            this.contentView = v;
            return this;
        }

        /**
         * Set the positive button resource and it's listener
         *
         * @param positiveButtonText
         * @return
         */
        public Builder setPositiveButton(int positiveButtonText,
                DialogInterface.OnClickListener listener) {
            this.positiveButtonText = (String) context
                    .getText(positiveButtonText);
            this.positiveButtonClickListener = listener;
            return this;
        }

        public Builder setPositiveButton(String positiveButtonText,
                DialogInterface.OnClickListener listener) {
            this.positiveButtonText = positiveButtonText;
            this.positiveButtonClickListener = listener;
            return this;
        }

        public Builder setNegativeButton(int negativeButtonText,
                DialogInterface.OnClickListener listener) {
            this.negativeButtonText = (String) context
                    .getText(negativeButtonText);
            this.negativeButtonClickListener = listener;
            return this;
        }

        public Builder setNegativeButton(String negativeButtonText,
                DialogInterface.OnClickListener listener) {
            this.negativeButtonText = negativeButtonText;
            this.negativeButtonClickListener = listener;
            return this;
        }

        public DialogBox create() {
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            final DialogBox dialog = new DialogBox(context, R.style.Dialog);
            View layout = inflater.inflate(R.layout.dialog_normal_layout, null);
            dialog.addContentView(layout, new LayoutParams(
                    LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
            ((TextView) layout.findViewById(R.id.title)).setText(title);
            if (positiveButtonText != null) {
                ((Button) layout.findViewById(R.id.positiveButton))
                        .setText(positiveButtonText);
                if (positiveButtonClickListener != null) {
                    ((Button) layout.findViewById(R.id.positiveButton))
                            .setOnClickListener(new View.OnClickListener() {
                                public void onClick(View v) {
                                    positiveButtonClickListener.onClick(dialog,
                                            DialogInterface.BUTTON_POSITIVE);
                                }
                            });
                }
            } else {
                layout.findViewById(R.id.positiveButton).setVisibility(
                        View.GONE);
            }
            if (negativeButtonText != null) {
                ((Button) layout.findViewById(R.id.negativeButton))
                        .setText(negativeButtonText);
                if (negativeButtonClickListener != null) {
                    ((Button) layout.findViewById(R.id.negativeButton))
                            .setOnClickListener(new View.OnClickListener() {
                                public void onClick(View v) {
                                    negativeButtonClickListener.onClick(dialog,
                                            DialogInterface.BUTTON_NEGATIVE);
                                }
                            });
                }
            } else {
                layout.findViewById(R.id.negativeButton).setVisibility(
                        View.GONE);
            }
            if (message != null) {
                ((TextView) layout.findViewById(R.id.message)).setText(message);
            } else if (contentView != null) {
                ((LinearLayout) layout.findViewById(R.id.content))
                        .removeAllViews();
                ((LinearLayout) layout.findViewById(R.id.content)).addView(
                        contentView, new LayoutParams(LayoutParams.FILL_PARENT,
                                LayoutParams.FILL_PARENT));
            }
            dialog.setContentView(layout);
            return dialog;
        }

    }
}

自定义View的布局文件：

 

MainActivity.Java

 

 

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}


	public void showAlertDialog(View view) {

		DialogBox.Builder builder = new DialogBox.Builder(this);
		builder.setMessage("删除该商品？");
		builder.setTitle("温馨提示");
		builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
			public void onClick(DialogInterface dialog, int which) {
				dialog.dismiss();
				// 你的操作事项
			}
		});

		builder.setNegativeButton("取消",
				new android.content.DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int which) {
						dialog.dismiss();
					}
				});

		builder.create().show();

	}
}

 

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