Android中Dialog的简单使用，附赠课程+题库

Android中Dialog的简单使用，附赠课程+题库

}

}

public void finishActivity(Activity activity){

if(activity!=null)

{

activityStack.remove(activity);

activity.finish();

activity=null;

}

}

public void finishActivity(Class cls){

for (Activity activity : activityStack)

{

if(activity.getClass().equals(cls) )

{

finishActivity(activity);

}

}

}

public void finishAllActivity(){

for (int i = 0, size = activityStack.size(); i < size; i++)

{

if (null != activityStack.get(i))

{

activityStack.get(i).finish();

}

}

activityStack.clear();

}

public void AppExit(Context context){

try

{

finishAllActivity();

ActivityManager activityMgr= (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); activityMgr.restartPackage(context.getPackageName());

System.exit(0);

}

catch (Exception e)

{

e.printStackTrace();

}

}

}

public abstract class baseActivity extends AppCompatActivity {

@Override protected void onCreate(@Nullable Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

//将Activity实例添加到AppManager的堆栈

AppManager.getAppManager().addActivity(this);

}

@Override protected void onDestroy()

{

super.onDestroy();

//将Activity实例从AppManager的堆栈中移除

AppManager.getAppManager().finishActivity(this);

}

}

/*需要主页面或者主类（mainactivity）处理Dialog的显示问题，通过管理APP(AppManager)获取到当前栈顶的Activity，用于构造Dialog就行了/

Dialog myDialog = new Dialog(AppManager.getAppManager().currentActivity(), R.style.dialog_style);

---

3.单选Dialog

int yourChoice;

private void showSingleChoiceDialog(){

final String[] items = { “我是1”,“我是2”,“我是3”,“我是4”, };

yourChoice = -1;

alertDialog.Builder singleChoiceDialog =

new alertDialog.Builder(MainActivity.this);

singleChoiceDialog.setTitle(“我是一个单选Dialog”);

singleChoiceDialog.setSingleChoiceItems(items, 0,

new DialogInterface.onClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

yourChoice = which;

}

});

singleChoiceDialog.setPositiveButton(“确定”,

new DialogInterface.onClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

if (yourChoice != -1) {

Toast.makeText(MainActivity.this,

“你选择了” + items[yourChoice],

Toast.LENGTH_SHORT).show();

}

}

});

singleChoiceDialog.show();

}

---

4.多选Dialog

ArrayList yourChoices = new ArrayList<>();

private void showMultiChoiceDialog() {

final String[] items = { “我是1”,“我是2”,“我是3”,“我是4” };

final boolean initChoiceSets[]={false,false,false,false};// 设置默认选中的选项，全为false默认均未选中

yourChoices.clear();

alertDialog.Builder multiChoiceDialog =

new alertDialog.Builder(MainActivity.this);

multiChoiceDialog.setTitle(“我是一个多选Dialog”);

multiChoiceDialog.setMultiChoiceItems(items, initChoiceSets,

new DialogInterface.onMultiChoiceClickListener() {

@Override

public void onClick(DialogInterface dialog, int which,

boolean isChecked) {

if (isChecked) {

yourChoices.add(which);

} else {

yourChoices.remove(which);

}

}

});

multiChoiceDialog.setPositiveButton(“确定”,

new DialogInterface.onClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

int size = yourChoices.size();

String str = “”;

for (int i = 0; i < size; i++) {

str += items[yourChoices.get(i)] + " ";

}

Toast.makeText(MainActivity.this,

“你选中了” + str,

Toast.LENGTH_SHORT).show();

}

});

multiChoiceDialog.show();

![这里写图片描述](https://img-blog.csdn.n

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et/2018061716014585?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNjcxNzk0/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70)

---

5.列表Dialog

private void showListDialog() {

final String[] items = { “我是1”,“我是2”,“我是3”,“我是4” };