Android Dialog对话框实例代码讲解

//创建DialogAlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);//设置标题图标builder.setIcon(R.drawable.ic_launcher);//设置标题builder.setTitle("这是一个对话框");//设置信息builder.setMessage("是否要跳转？");//确定按钮setPositiveButton(CharSequence text, DialogInterface.OnClickListener listener)//取消按钮setNegativeButton (CharSequence text, DialogInterface.OnClickListener listener)//忽略setNeutralButton (CharSequence text, DialogInterface.OnClickListener listener)//显示对话框show();

AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);     builder.setIcon(R.drawable.ic_launcher);     builder.setTitle("选择一个城市");     //下拉列表的数据源     final String[] cities = {"北京", "上海", "广州", "深圳", "杭州"};     builder.setItems(cities, new DialogInterface.OnClickListener(){       @Override       public void onClick(DialogInterface dialog, int which){         Toast.makeText(MainActivity.this, "你选择的城市为：" + cities[which], Toast.LENGTH_SHORT).show();       } }); builder.show();

AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);    builder.setIcon(R.drawable.ic_launcher);    builder.setTitle("请选择性别");    final String[] sex = {"男", "女"};    //第二个参数指定默认哪个单选框被勾中    builder.setSingleChoiceItems(sex, 1, new DialogInterface.OnClickListener(){      @Override      public void onClick(DialogInterface dialog, int which){          Toast.makeText(MainActivity.this, "性别为：" + sex[which], Toast.LENGTH_SHORT).show();      }    });    builder.setPositiveButton("确定", new DialogInterface.OnClickListener(){      @Override      public void onClick(DialogInterface dialog, int which){                  }    });    builder.setNegativeButton("取消", new DialogInterface.OnClickListener(){      @Override      public void onClick(DialogInterface dialog, int which){                  }    });builder.show();

String str;AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setIcon(R.drawable.ic_launcher);builder.setTitle("选择你想看的电视剧");final String[] hobbies = {"廷禧攻略", "扶摇", "香蜜沉沉烬如霜", "如懿传"};//第二个参数代表哪几个选项被选择，需要传递一个boolean[]数组进去，其长度要和第一个参数的长度相同,如果null表示都不选builder.setMultiChoiceItems(hobbies, null, new DialogInterface.OnMultiChoiceClickListener(){　 @Override　　public void onClick(DialogInterface dialog, int which, boolean isChecked){  　　if(isChecked){  　　　　str.append(hobbies[which] + ", ");  　　}  　　Toast.makeText(MainActivity.this, "选择的是：" + str.toString(), Toast.LENGTH_SHORT).show();  } });builder.setPositiveButton("确定", new DialogInterface.OnClickListener(){　　@Override　　public void onClick(DialogInterface dialog, int which){  }});builder.setNegativeButton("取消", new DialogInterface.OnClickListener(){　　@Override　　public void onClick(DialogInterface dialog, int which){  }});builder.show();

ProgressDialog waitingDialog= new ProgressDialog(MainActivity.this);waitingDialog.setTitle("等待加载中，请稍后...");waitingDialog.setMessage("等待中...");waitingDialog.setIndeterminate(true);//采用不确定式的进度条waitingDialog.setCancelable(false);//点击外部不取消对话框waitingDialog.show();

int MAXPD = 100;ProgressDialog progressDialog = new ProgressDialog(MainActivity.this);progressDialog.setProgress(0);//设置默认值progressDialog.setTitle("正在下载");progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//进度条样式progressDialog.setMax(MAXPD);//设置最大值progressDialog.show();

public class CustomDialog extends Dialog {//标题protected TextView hintTv;//左边按钮protected Button doubleLeftBtn;//右边按钮protected Button doubleRightBtn;//输入框public EditText editText;public CustomDialog(Context context) {  super(context, R.style.CustomDialogStyle);}@Overrideprotected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  this.setCancelable(false); // 是否可以撤销  setContentView(R.layout.dialog_custom);  hintTv = findViewById(R.id.tv_common_dialog_hint);  doubleLeftBtn = findViewById(R.id.btn_common_dialog_double_left);  doubleRightBtn = findViewById(R.id.btn_common_dialog_double_right);  editText = findViewById(R.id.et_common_dialog);}//置右键文字和点击事件public void setRightButton(String rightStr, View.OnClickListener clickListener) {  doubleRightBtn.setOnClickListener(clickListener);  doubleRightBtn.setText(rightStr);}//设置左键文字和点击事件public void setLeftButton(String leftStr, View.OnClickListener clickListener) {  doubleLeftBtn.setOnClickListener(clickListener);  doubleLeftBtn.setText(leftStr);}//设置提示内容public void setHintText(String str) {  hintTv.setText(str);  hintTv.setVisibility(View.VISIBLE);}//给两个按钮 设置文字public void setBtnText(String leftStr, String rightStr) {  doubleLeftBtn.setText(leftStr);  doubleRightBtn.setText(rightStr);}}

<style name="CustomDialogStyle" parent="@android:style/Theme.Dialog">    <!-- 边框 -->    <item name="android:windowFrame">@null</item>    <!-- 背景透明 -->    <item name="android:windowBackground">@color/transparent</item>    <!-- 无标题 -->    <item name="android:windowNoTitle">true</item>    <!-- 是否浮现在activity之上 -->    <item name="android:windowIsFloating">true</item>    <!-- 半透明 -->    <item name="android:windowIsTranslucent">false</item>    <!-- 背景模糊 -->    <item name="android:windowContentOverlay">@null</item>    <!-- 允许对话框的背景变暗 -->    <item name="android:backgroundDimEnabled">true</item>    <!-- 字体颜色 -->    <item name="android:textColor">@color/white</item>    <item name="android:editTextColor">@color/white</item> </style>

<LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:id="@+id/ll_common_dialog_layout"  android:layout_width="500dp"  android:layout_height="250dp"  android:layout_margin="5dp"  android:background="@drawable/background_info"  android:orientation="vertical"  android:gravity="center">  <!--提示信息-->  <TextView    android:id="@+id/tv_common_dialog_hint"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:gravity="center"    android:textColor="@color/white"    android:textSize="27sp"/>  <EditText    android:id="@+id/et_common_dialog"    android:layout_width="300dp"    android:layout_height="wrap_content"    android:textColor="@color/back"    android:inputType="text|textNoSuggestions"    tools:ignore="LabelFor"    android:hint="请输入密码"/>    <!--底部按钮-->  <LinearLayout    android:id="@+id/ll_common_dialog_double"    android:layout_width="360dp"    android:layout_height="60dp"    android:layout_margin="20dp"    android:orientation="horizontal">    <Button      android:id="@+id/btn_common_dialog_double_left"      android:layout_width="0dp"      android:layout_height="match_parent"      android:layout_weight="1"      android:background="@drawable/btnselector"      android:gravity="center"      android:textColor="@color/white"      android:textSize="27dp"/>    <Button      android:id="@+id/btn_common_dialog_double_right"      android:layout_width="0dp"      android:layout_height="match_parent"      android:layout_weight="1"      android:background="@drawable/btnselector"      android:gravity="center"      android:textColor="@color/white"      android:textSize="27dp"/>  </LinearLayout></LinearLayout>

//弹出dialog时隐藏底部虚拟按键dialog.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);dialog.getWindow().getDecorView().setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {  @Override  public void onSystemUiVisibilityChange(int visibility) {    int uiOptions =View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;    if (Build.VERSION.SDK_INT >= 19) {      uiOptions |= 0x00001000;    } else {      uiOptions |= View.SYSTEM_UI_FLAG_LOW_PROFILE;    }    dialog.getWindow().getDecorView().setSystemUiVisibility(uiOptions);  }});

CustomDialog dialog = new CustomDialog(this);dialog.setHintText("请输入密码");dialog.setLeftButton("取消", new View.OnClickListener() {    @Override    public void onClick(View v) {      dialog.dismiss();    }});dialog.setRightButton("确定", new View.OnClickListener() {    @Override    public void onClick(View v) {            }});dialog.show();