day08activity close app progressbar ratingbar seekbar intent

1. intent activities loop

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

2. close app

    static List<Activity> activityList = new LinkedList<Activity>();
        static void finishAllActivity() {
        for(Activity activity:activityList)
        {
            activity.finish();
        }

        activityList.clear();
    }

    static void closeApp() {
        // all activity must finish.
        finishAllActivity();
        System.exit(0);
    }

3. progressbar

    <!-- 水平进度条 -->
    <!--style="@android: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 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" />

4. 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.seekbar

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

6. intent 相当于是中间人 activity、service、broadcast receiver
   intent details
   6.1 component name

                Intent intent = new Intent();
                ComponentName componentName = new ComponentName("com.ylzh.day07runstopact", "com.ylzh.day07runstopact.PasswordActivity");
                intent.setComponent(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()) {
                case R.id.btnCall:
                    intent.setAction(intent.ACTION_DIAL);
                    intent.setData(Uri.parse("tel:[phone]"));
                    break;
                case R.id.btnMessage:
                    intent.setAction(intent.ACTION_SENDTO);
                    intent.setData(Uri.parse("smsto:5554"));
                    intent.putExtra("sms_body", "Welcome to Android");
                    break;
                default:
                    return;
            }
            startActivity(intent);
        }
    };

    <uses-permission android:name="android.permission.CALL_PHONE"/>
    <uses-permission android:name="android.permission.SEND_SMS"/>

6.3 category

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

7. Spinner 下拉框
   
   entries
   setOnClickItemSelectedListener

本文地址：https://blog.csdn.net/u012919240/article/details/108168799