android对话框介绍
一点需要注意：对话框接收上下文不能用getaplicationcontext，因为它要挂在到activity上，
用getaplicationcontext它不知道挂在到哪个activity上。
用getaplicationcontext它不知道挂在到哪个activity上。
默认对话框
/**
* 默认对话框
*
*/
public void click1(View v){
//1 创建对话框
AlertDialog.Builder builder = new Builder(MainActivity.this);
builder.setTitle("警告");
builder.setMessage("您的网络有异常");
builder.setPositiveButton("确定", new OnClickListener() {
//点击 确定按钮之后 该方法执行
@Override
public void onClick(DialogInterface dialog, int which) {
System.out.println("点击了确定");
}
});
builder.setNegativeButton("取消", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
//一定不要忘记 show
builder.show();
}
单选 对话框
/**
* 单选 对话框
*
*/
public void click2(View v){
//1 创建对话框
AlertDialog.Builder builder = new Builder(MainActivity.this);
builder.setTitle("请选课");
final String items[] = {"android","ios","C++","C"};
builder.setSingleChoiceItems(items, -1, new OnClickListener() {
//选中了具体某一个
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, items[which], 1).show();
dialog.dismiss(); //取消对话框
}
});
//一定不要忘记 show
// builder.show();
dialog = builder.create();
dialog.show();
}
多选 对话框
/**
* 多选 对话框
*
*/
public void click3(View v){
//1 创建对话框
AlertDialog.Builder builder = new Builder(MainActivity.this);
builder.setTitle("请选择您喜欢的水果");
final String items[] = {"橘子","苹果","梨","榴莲","橙子","猕猴桃","黄瓜","火龙果"};
final boolean[] checkedItems = {true,false,false,false,false,false,true,false};
builder.setMultiChoiceItems(items, checkedItems,new OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
//
checkedItems[which] = isChecked;
}
});
builder.setPositiveButton("确定", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//我要却出我选中的
StringBuffer sb = new StringBuffer();
for (int i = 0; i < checkedItems.length; i++) {
if (checkedItems[i]) {
String fruit = items[i]; //取出选中水果
sb.append(fruit+ " ");
}
}
Toast.makeText(getApplicationContext(), sb.toString(), 1).show();
}
});
//一定不要忘记 show
// builder.show();
dialog = builder.create();
dialog.show();
}
进度对话框
/**
* 进度对话框
* progressDialog
*/
public void click4(View v){
final ProgressDialog progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setTitle("天天酷跑");
progressDialog.setMessage("正在玩命加载ing");
//设置进度条的样式
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressDialog.show();
progressDialog.setMax(100);
new Thread(){public void run() {
try {
for (int i = 0; i <= 100; i++) {
Thread.sleep(50);
progressDialog.setProgress(i);
}
progressDialog.dismiss();
} catch (InterruptedException e) {
e.printStackTrace();
}
// progressDialog.dismiss();
};}.start();
}