alertDialog = new ProgressDialog(this);
alertDialog.setMessage(getResources().getString(R.string.loader));
alertDialog.setCancelable(false);
alertDialog.show();
简单地说,当我这样做时,绿色圆圈显示除了它之外的单词loading.但是,当我不使用进度对话框,并且我在页面上使用进度条时,我得到一个粉红色,因为我在styles.xml中定义了以下内容
<item name="colorPrimary">@color/pink</item>
<item name="colorPrimaryDark">@color/pink</item>
<item name="colorAccent">@color/pink</item>
获取圆形粉红色的解决方案是什么,如页面上的进度条？
在我的活动课上
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
AlarmManager alarmManager=(AlarmManager) getSystemService(ALARM_SERVICE);
Intent intent = new Intent(MainActivity.this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, intent, 0);
alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,System.currentTimeMillis(),2000, pendingIntent);
}
我的onrecieve功能在alarmreciever类
@Override
public void onReceive(Context context, Intent intent)
{
//get and send location information
System.out.println("fired");
}
我正在使用nexus 4,kitkat版本.我没有看到每2分钟发射任何一个接收函数.正在发生...任何帮助？谢谢
Run Code Online (Sandbox Code Playgroud)<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.alarmexample" android:versionCode="1" android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="20" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver
android:name="com.example.AlarmExample"
android:exported="false" > …public static Bitmap drawCircle(int width,int height, int borderWidth) {
Bitmap canvasBitmap = Bitmap.createBitmap( width, height, Bitmap.Config.ARGB_8888);
BitmapShader shader = new BitmapShader(canvasBitmap, TileMode.CLAMP,
TileMode.CLAMP);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setShader(shader);
paint.setShader(null);
paint.setStyle(Paint.Style.STROKE);
paint.setColor(Color.WHITE);
paint.setStrokeWidth(borderWidth);
Canvas canvas = new Canvas(canvasBitmap);
float radius = width > height ? ((float) height) / 2f : ((float) width) / 2f;
canvas.drawCircle(width / 2, height / 2, radius - borderWidth / 2, paint);
return canvasBitmap;
}
简单的这个代码绘制一个带有白色边框的圆圈,但是我希望边框的一部分是黑色而另一部分是白色的.40%的黑色,60%的白色
如何才能做到这一点？
如何获得屏幕宽度dpi？
DisplayMetrics metrics = getResources().getDisplayMetrics();
int f = metrics.densityDpi;
// getWindowManager().getDefaultDisplay().getMetrics(metrics);
int width = metrics.widthPixels;
int dp = (int)(width / (metrics.density));
我这样做,所以让我假设我的densitydpi是120 ..和widthpixel 240 ..通过计算得到240/0.75 ....所以我有320宽度？
然而情况并非如此......我认为widthdpi小于320 ...因为320在屏幕上跟我错了....使用120个作品.
在Nexus 4上......宽度为768,密度为320 ......我除以768/2,得到384正确的宽度密度dpi(它可以工作)
但在其他像240,160,120密度dpi ... widthdpi的计算似乎是错误的...
我这样做了
Run Code Online (Sandbox Code Playgroud)Notification.Builder notificationBuilder = new Notification.Builder( getApplicationContext()); RemoteViews mContentView = new RemoteViews( getApplicationContext().getPackageName(), R.layout.custom_notification); Uri alertSound = RingtoneManager .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); notificationBuilder.setSound(alertSound); mContentView.setTextViewText(R.id.text, getResources() .getString(R.string.activation_code) + ": " + mUUID); notificationBuilder.setContent(mContentView); notificationBuilder.setContentTitle(getResources() .getString(R.string.activation_code)); notificationBuilder .setSmallIcon(R.drawable.ic_launcher); notificationBuilder.setAutoCancel(true); NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); manager.notify(11151990, notificationBuilder.getNotification());
非常简单,直到今天我的棒棒糖操作系统为nexus 7完美运行.顶部的通知图标显示白色圆圈.我该怎么办？当我从顶部拖动时,通知内部看起来正常.
final SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(mContext);
final OkHttpClient okHttpClient = new OkHttpClient.Builder()
.addInterceptor(new Interceptor() {
@Override
public okhttp3.Response intercept(Interceptor.Chain chain) throws IOException {
Request.Builder ongoing = chain.request().newBuilder();
ongoing.addHeader("Cache-Control", "no-cache");
ongoing.addHeader("User-Agent", System.getProperty("http.agent"));
ongoing.addHeader("authorization", sharedPreferences.getString("api_key",""));
return chain.proceed(ongoing.build());
}
})
.build();
new Picasso.Builder(mContext).downloader(new OkHttp3Downloader(okHttpClient)).build().with(mContext).load(event.getPictureUrl()).into(holder.eventimage);
我正在使用
com.squareup.picasso:picasso:2.5.2, com.jakewharton.picasso:picasso2-okhttp3-downloader:1.1.0，com.squareup.okhttp3:okhttp:3.4.1
并且它没有在标头中发送任何内容。如何解决这个问题？
一旦我添加了这个 Picasso.setSingletonInstance(picasso); 后来我使用了毕加索，它起作用了。
我有一个循环ProgressBar,我想要在这个圆形栏内,以百分比写出进展(如60%,或70%..)
我怎么能在圆形内做到这一点ProgressBar？
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ProgressBar
android:id="@+id/progressBars"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_centerInParent="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="20dp"
android:indeterminate="false"
android:indeterminateDrawable="@drawable/progress_bar"
android:max="100" />
</RelativeLayout>
我正在努力研究android studio上的新应用程序,我曾经在e上工作
Run Code Online (Sandbox Code Playgroud)UNEXPECTED TOP-LEVEL EXCEPTION: com.android.dex.DexIndexOverflowException: method ID not in [0, 0xffff]: 65536 at com.android.dx.merge.DexMerger$6.updateIndex(DexMerger.java:484) at com.android.dx.merge.DexMerger$IdMerger.mergeSorted(DexMerger.java:261) Error:Execution failed for task ':app:transformClassesWithDexForDebug'. com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/bin/java'' finished with non-zero exit value 2
这个错误会是什么？
我已经将一些jar文件移动到了我的日食中.而我的build.gradle就是这样的
Run Code Online (Sandbox Code Playgroud)apply plugin: 'com.android.application' android { compileSdkVersion 23 buildToolsVersion "23.0.2" defaultConfig { applicationId "com.netvariant.heinz" minSdkVersion 14 targetSdkVersion 21 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } }}dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:design:23.1.1' compile 'com.google.android.gms:play-services:8.4.0'}
public static Bitmap drawCircle(int width,int height, int borderWidth) {
Bitmap canvasBitmap = Bitmap.createBitmap( 350, 350, Bitmap.Config.ARGB_8888);
BitmapShader shader = new BitmapShader(canvasBitmap, TileMode.CLAMP, TileMode.CLAMP);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setShader(shader);
paint.setShader(null);
paint.setStyle(Paint.Style.STROKE);
paint.setColor(Color.WHITE);
paint.setStrokeWidth(borderWidth);
Paint paint1 = new Paint();
paint1.setAntiAlias(true);
paint1.setShader(shader);
paint1.setShader(null);
paint1.setStyle(Paint.Style.STROKE);
paint1.setColor(Color.WHITE);
paint1.setStrokeWidth(borderWidth);
Canvas canvas = new Canvas(canvasBitmap);
float radius = width > height ? ((float) height) / 2f : ((float) width) / 2f;
//canvas.drawCircle(width / 2, height / 2, radius - borderWidth / 2, paint);
final RectF …如何将zip文件转换为字节？
Run Code Online (Sandbox Code Playgroud)byte[] ba; InputStream is = new ByteArrayInputStream(ba); InputStream zis = new ZipInputStream(is);