day08activity close app progressbar ratingbar seekbar intent

更新时间:2023-04-04 03:38:45 阅读：评论：0

intent activities loop

//创建Intent对象Intent intent = new Intent(MainActivity.this, PasswordActivity.class);startActivity(intent); //启动Activity

clo app

    static List<Activity> activityList = new LinkedList<Activ创业故事大全ity>();        static void finishAllActivity() {        for(Activity activity:activityList)        {            activity.finish();        }        activityList.clear();    }    static void cloApp() {        // all activity must finish.        finishAllActivity();        System.exit(0);    }

progressbar

    <!-- 水平进度条 -->    <!--style="@andro征途名字大全id:style/Widget.ProgressBar.Horizontal" 粗水平长条进度条 -->    <!--android:max 用于设置进度条的最大值 android:progress 用于指定进度条已完成的进度值 android:progressDrawable 用于设置进度条轨道的绘制形式-->    <!--?android:attr/progressBarStyleHorizontal 细水平长条进度条 ?android:attr/progressBarStyleLarge 东北林业大学录取分数线大圆形进度条 ?android:attr/progressBarStyleSmall 小圆形进度条 @android:style/Widget.ProgressBar.Large 大跳跃、旋转画面的进度条 @android:style/Widget.ProgressBar.Small 小跳跃、旋转画面的进度条 @android:style/Widget.ProgressBar.Horizontal 粗水平长条进度条-->    <ProgressBar android:id="@+id/progressBar1" style="@android:style/Widget.ProgressBar.Horizontal" android:layout_width="match_parent" android:layout_height="25dp" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_marginBottom="60dp" android:max="100" />

ratingbar

    <!-- 星级评分条 -->    <!--android:isIndicator 用于指定该星级评分条是否允许用户改变，true为不允许改变 android:numStars 用于指定该星级评分条总共有多少个星 android:rating 用于指定该星级评分条默认的星级 android:stepSize 用于指定每次最少需要改变多少个星级，默认为0.5个-->    <RatingBar android:id="@+id/ratingBar1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:numStars="5" android:rating="1" android:isIndicator="true" android:layout_above="@+id/btn" android:layout_marginBottom="60dp"/>

5.ekbar

    <SeekBar android:id="@+id/ekbar" android:layout_width="match_parent" android:layout_height="wrap_content" android:max="255" android:progress="255" />

intent 相当于是中间人 activity、rvice、broadcast receiver
intent details
6.1 component name

                Intent intent = new Intent();                ComponentName componentName = new ComponentName("com.ylzh.day07runstopact", "com.ylzh.day07runstopact.PasswordActivity");                intent.tComponent(componentName);                startActivity(intent); //启动Activity

6.2 action data

 public View.OnClickListener onClickListener = new View.OnClickListener() {        @Override        public void onClick(View v) {            Intent intent = new Intent();            Button button = (Button)v;            switch (button.getId()) {                ca R.id.btnCall:                    intent.tAction(intent.ACTION_DIAL);元宵节手抄报简单好看                    intent.tData(Uri.par("tel:17351098691"));                    break;                ca R.id.btnMessage:                    intent.tAction(intent.ACTION_SENDTO);                    intent.tData(Uri.par("smsto:5554"));                    intent.putExtra("sms_body", "Welcome to Android");                    break;                default:                    return;            }            startActivity(intent);        }    };

    <us-permission android:name="android.permission.CALL_数学建模论文PHONE"/>    <us-permission android:name="android.permission.SEND_SMS"/>

6.3 category

Intent intent = new Intent();intent.tAction(intent.ACTION_MAIN);intent.addCategory(intent.CATEGORY_HOME);startActivity(intent);Toast.makeText(MainActivity.this, "Go to Home Ok", Toast.LENGTH_LONG).show();

隐式intent 2

<activity android:name=".ShowActivity"><intent-filter>    <action android:name="android.intent.action.VIEW"/>    <category android:name="android.intent.category.DEFAULT"/></intent-filter></activity>

button.tOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            Intent intent = new Intent();            intent.tAction(intent.ACTION_VIEW);            startActivity(intent);        }    });