Android自定义提示框

    在开发中，如果感觉系统自带的提示框不好看，开发者可以自己定义提示框的样式，主要是继承Dialog

程序目录结构

关键代码

package com.dzt.custom.dialog;import android.app.Dialog;import android.content.Context;import android.content.res.Resources;import android.util.DisplayMetrics;import android.view.Gravity;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.TextView;/** * 自定义对话框 *  *  */public class CustomDialog extends Dialog implementsandroid.view.View.OnClickListener {private static int default_width = 400; // 默认宽度private static int default_height = 200;// 默认高度private static String mShowText = null;private TextView mText = null;public CustomDialog(Context context) {super(context);}public CustomDialog(Context context, int layout, int style, String msg) {this(context, default_width, default_height, layout, style, msg);}public CustomDialog(Context context, int width, int height, int layout,int style, String msg) {super(context, style);// 设置内容setContentView(layout);mShowText = msg;initWidgets();// 设置窗口属性Window window = getWindow();WindowManager.LayoutParams params = window.getAttributes();// 设置宽度、高度、密度、对齐方式float density = getDensity(context);params.width = (int) (width * density);params.height = (int) (height * density);params.gravity = Gravity.CENTER;window.setAttributes(params);}@Overrideprotected void onStop() {// TODO Auto-generated method stubsuper.onStop();System.out.println("stop");}/** * 初始化提示框中的控件 */private void initWidgets() {CustomImageButton btn = (CustomImageButton) findViewById(R.id.btn_ok);btn.setOnClickListener(this);btn = (CustomImageButton) findViewById(R.id.btn_cancel);btn.setOnClickListener(this);mText = (TextView) findViewById(R.id.dlg_tv_text);mText.setText(mShowText);}/** * 获取显示密度 *  * @param context * @return */public float getDensity(Context context) {Resources res = context.getResources();DisplayMetrics dm = res.getDisplayMetrics();return dm.density;}@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.btn_ok:if (listener != null)listener.onClickOk();System.out.println("you click ok button---------");break;case R.id.btn_cancel:if (listener != null)listener.onClickCancel();System.out.println("you click cancel button-------");break;default:break;}}public void setOnClickBtnListener(OnClickBtnListener listener) {this.listener = listener;}private OnClickBtnListener listener = null;public interface OnClickBtnListener {public void onClickOk();public void onClickCancel();}}

在提示框中对两个按钮设置了监听器，按钮也是自定义的

package com.dzt.custom.dialog;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.Paint.Align;import android.util.AttributeSet;import android.util.Log;import android.widget.ImageButton;/** * 自定义ImageButton 可以在ImageButton上面设置文字 */public class CustomImageButton extends ImageButton {private static final String TAG = "CustomImageButton_dzt";private String mtext = "";private int mcolor = 0;private float mtextsize = 0f;private Paint mpatin;public CustomImageButton(Context context, AttributeSet attrs) {super(context, attrs);initAttrs(attrs);}private void initAttrs(AttributeSet attrs) {TypedArray array = getContext().obtainStyledAttributes(attrs,R.styleable.CustomButtonAttrs);mtext = array.getString(R.styleable.CustomButtonAttrs_textValue);mcolor = array.getColor(R.styleable.CustomButtonAttrs_textColor, 230);mtextsize = array.getDimension(R.styleable.CustomButtonAttrs_textSize,25.0f);array.recycle(); // 回收资源mpatin = new Paint();mpatin.setTextAlign(Align.CENTER);Log.d(TAG, "mtextsize = " + mtextsize);}public void setText(String text) {this.mtext = text;}public void setColor(int color) {this.mcolor = color;}public void setTextSize(float textsize) {this.mtextsize = textsize;}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);mpatin.setColor(mcolor);mpatin.setTextSize(mtextsize);canvas.drawText(mtext, canvas.getWidth() / 2,(canvas.getHeight() / 2)+10, mpatin);}}

在调用时也非常简单

@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.btn_show_dialog:customDialog = new CustomDialog(this, R.layout.dialog_layout,R.style.DialogTheme, getResources().getString(R.string.text_show));customDialog.show();customDialog.setOnClickBtnListener(new OnClickBtnListener() {@Overridepublic void onClickOk() {// TODO Auto-generated method stubSystem.out.println("you click ok button");// 处理点击OK时的操作// ...............customDialog.cancel();}@Overridepublic void onClickCancel() {// TODO Auto-generated method stubSystem.out.println("you click cancel button");// 处理点击Cancel时的操作// ...................customDialog.cancel();}});break;default:break;}}

需要源码的可以到：http://download.csdn.net/detail/deng0zhaotai/7760615