Android
4 分钟 读完 (大约 601 个字)

Android tips

用于记录Android开发中一些常用的代码和小技巧，方便查询和使用。
目前记录的有：

  • 使用gradle生成不同的包名和应用名
  • 使用gradle往资源文件中添加数据
  • 使用gradle自动生成apk文件名
  • Android 6.0以上实现深色模式
  • 设置TextView中的可点击链接

Gradle

配置构建类型和产品类型

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
//必须要有默认的类型，名字可以自定义
flavorDimensions "default"
productFlavors {
    dev {
//            resConfigs "xxxhdpi"  可以指定使用的资源文件
        resValue("string", "app_name", "影库(Dev)")
    }
    prod {
        resValue("string", "app_name", "影库")
    }
}

buildTypes {
    debug {
        applicationIdSuffix ".debug"
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        debuggable true
        jniDebuggable false
        renderscriptDebuggable false
        renderscriptOptimLevel 3
        zipAlignEnabled true
        shrinkResources false
        ndk {
            abiFilters "armeabi", "armeabi-v7a", "x86"
        }
    }
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        ndk {
            abiFilters "armeabi", "armeabi-v7a"
        }
    }
}

通过gradle写入字符串到资源文件

1
2
3
4
5
6
7
8
9
10
buildTypes.each {
    Properties properties = new Properties()
    properties.load(project.rootProject.file("local.properties").newDataInputStream())
    def tmdbApiKey = properties.getProperty("tmdb_api_key", "")

    it.buildConfigField 'String', "TMDB_API_KEY", tmdbApiKey

    it.resValue 'string', "api_key", tmdbApiKey

}

指定构建生成的apk名称

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
applicationVariants.all { variant ->
    variant.outputs.all { output ->
        delete fileTree(output.outputFile.parent)
        def SEP = "_"
        def appName = "影库"
        def dateTime = new Date().format("yyyyMMdd_HHmm")
        def productFlavor = variant.productFlavors[0].name
        def buildType = variant.buildType.name
        def versionCode = variant.versionCode
        def versionName = variant.versionName
        // e.g. 影库_20180809_dev_22_4.4.2.apk
        def apkName = appName + SEP + dateTime + SEP + productFlavor + SEP + versionCode + SEP + versionName + ".apk"
        outputFileName = apkName
    }
}

UI

Android 6.0以上深色模式

1
2
3
4
5
6
7
8
9
10
11
12
13


<style name="Base.AppTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
    
    <item name="colorPrimary">@color/colorPrimaryitem>
    <item name="colorPrimaryDark">@color/colorPrimaryDarkitem>

    
    <item name="android:windowLightStatusBar" tools:targetApi="m">@bool/use_light_statusitem>
    <item name="android:statusBarColor">@color/transparentitem>
    <item name="android:windowLightNavigationBar" tools:targetApi="o_mr1">@bool/use_light_navigationitem>

style>

改变activity的主题

1
2
3
4
5
6
7
8
9
10
11
12
13
14
@SuppressLint("WrongConstant")
fun AppCompatActivity.updateForTheme(theme: Theme) = when (theme) {
    Theme.DARK -> delegate.localNightMode = AppCompatDelegate.MODE_NIGHT_YES
    Theme.LIGHT -> delegate.localNightMode = AppCompatDelegate.MODE_NIGHT_NO
    Theme.SYSTEM -> delegate.localNightMode = AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
    Theme.BATTERY_SAVER -> delegate.localNightMode = AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
}
@SuppressLint("WrongConstant")
fun updateForTheme(delegate: AppCompatDelegate, theme: Theme) = when (theme) {
    Theme.DARK -> delegate.localNightMode = AppCompatDelegate.MODE_NIGHT_YES
    Theme.LIGHT -> delegate.localNightMode = AppCompatDelegate.MODE_NIGHT_NO
    Theme.SYSTEM -> delegate.localNightMode = AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
    Theme.BATTERY_SAVER -> delegate.localNightMode = AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
}

设置TextView中的可点击链接

TextView加载Html后，可能需要对于html中的链接可以点击，可以采用如下代码实现点击效果。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
protected void makeLinkClickable(SpannableStringBuilder strBuilder, final URLSpan span){
    int start = strBuilder.getSpanStart(span);
    int end = strBuilder.getSpanEnd(span);
    int flags = strBuilder.getSpanFlags(span);
    ClickableSpan clickable = new ClickableSpan() {
        public void onClick(View view) {
            // Do something with span.getURL() to handle the link click...
        }
    };
    strBuilder.setSpan(clickable, start, end, flags);
    strBuilder.removeSpan(span);
}

protected void setTextViewHTML(TextView text, String html){
    CharSequence sequence = Html.fromHtml(html);
    SpannableStringBuilder strBuilder = new SpannableStringBuilder(sequence);
    URLSpan[] urls = strBuilder.getSpans(0, sequence.length(), URLSpan.class);
    for(URLSpan span : urls) {
        makeLinkClickable(strBuilder, span);
    }
    text.setText(strBuilder);
    text.setMovementMethod(LinkMovementMethod.getInstance());       
}
 
使用CameraX简化Androin相机的开发

评论

关注我
Your browser is out-of-date!

Update your browser to view this website correctly. Update my browser now

×