问题
there are questions here same as the above topic but didn't get an answer
i have a layout here
i need to use the image as the same in top layout for bottom one but with blur style
set alpha does not help - text views also affect
how to blur the background of the down layout
xml here
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent"
android:background="#ffffff">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="105"
android:orientation="vertical">
/// top layout with image
<LinearLayout
android:background="@drawable/s"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="45">
</LinearLayout>
//// other set of layouts that i want to add the same iamge but in blur style
<LinearLayout
android:alpha="220"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="60"
android:weightSum="75"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="25">
<TextView
android:id="@+id/brand_name"
android:layout_marginTop="10dp"
android:textSize="25dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SHAKY ISLES"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<ImageView
android:id="@+id/image_icon"
android:layout_width="20dp"
android:layout_height="20dp"
android:background="#000000"
android:layout_below="@+id/brand_name"
android:layout_centerHorizontal="true" />
<TextView
android:text=" 6 - 502 m"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/image_icon"
android:layout_alignRight="@+id/brand_name"
android:layout_alignEnd="@+id/brand_name"
android:layout_below="@+id/brand_name" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="20">
<TextView
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:id="@+id/discription"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here. "
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
<View
android:id="@+id/boder"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#000000"></View>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="30"
>
<TextView
android:id="@+id/address"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="22, Customs St E ,Auckland"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
<View
android:id="@+id/down_border"
android:layout_alignParentTop="true"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#000000"></View>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>
any help ?
even with a code with out xml
回答1:
Mr. sisara to blur your view try this code did some coding for you
public class MainActivity extends Activity {
private ImageView imViewAndroid;
private TextView discriptionn;
private TextView statusText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test_layout);
imViewAndroid = (ImageView) findViewById(R.id.image);
discriptionn = (TextView) findViewById(R.id.discription);
statusText = addStatusText((ViewGroup) findViewById(R.id.relative_layout_down));
applyBlur();
}
private void applyBlur() {
imViewAndroid.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
imViewAndroid.getViewTreeObserver().removeOnPreDrawListener(this);
imViewAndroid.buildDrawingCache();
Bitmap bmp = imViewAndroid.getDrawingCache();
blur(bmp, discriptionn);
return true;
}
});
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
private void blur(Bitmap bkg, View view) {
long startMs = System.currentTimeMillis();
float radius = 20;
Bitmap overlay = Bitmap.createBitmap((int) (view.getMeasuredWidth()),
(int) (view.getMeasuredHeight()), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(overlay);
canvas.translate(-view.getLeft(), -view.getTop());
canvas.drawBitmap(bkg, 0, 0, null);
RenderScript rs = RenderScript.create(MainActivity.this);
Allocation overlayAlloc = Allocation.createFromBitmap(
rs, overlay);
ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(
rs, overlayAlloc.getElement());
blur.setInput(overlayAlloc);
blur.setRadius(radius);
blur.forEach(overlayAlloc);
overlayAlloc.copyTo(overlay);
view.setBackground(new BitmapDrawable(
getResources(), overlay));
rs.destroy();
statusText.setText(System.currentTimeMillis() - startMs + "ms");
}
@Override
public String toString() {
return "RenderScript";
}
private TextView addStatusText(ViewGroup container) {
TextView result = new TextView(MainActivity.this);
result.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
result.setTextColor(0xFFFFFFFF);
container.addView(result);
return result;
}
}
回答2:
Try this in xml
android:alpha="0.5"
or in code
yourView.getBackground().setAlpha(100);
Try this Code
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent"
android:background="#ffffff">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="105"
android:orientation="vertical">
/// top layout with image
<LinearLayout
android:background="@drawable/s"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="45">
</LinearLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="60"
android:weightSum="75"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alpha="0.5"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:src="@drawable/s"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="60"
android:weightSum="75"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="25">
<TextView
android:id="@+id/brand_name"
android:layout_marginTop="10dp"
android:textColor="@color/BlackColor"
android:textSize="25dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SHAKY ISLES"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<ImageView
android:id="@+id/image_icon"
android:layout_width="20dp"
android:layout_height="20dp"
android:background="#000000"
android:layout_below="@+id/brand_name"
android:layout_centerHorizontal="true" />
<TextView
android:text=" 6 - 502 m"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/image_icon"
android:layout_alignRight="@+id/brand_name"
android:layout_alignEnd="@+id/brand_name"
android:layout_below="@+id/brand_name" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="20">
<TextView
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:id="@+id/discription"
android:layout_width="wrap_content"
android:textColor="@color/BlackColor"
android:layout_height="wrap_content"
android:text="22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here.22, Customs St E ,Auckland and discription here. "
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
<View
android:id="@+id/boder"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#000000"></View>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="30"
>
<TextView
android:id="@+id/address"
android:layout_width="wrap_content"
android:textColor="@color/BlackColor"
android:layout_height="wrap_content"
android:text="22, Customs St E ,Auckland"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
<View
android:id="@+id/down_border"
android:layout_alignParentTop="true"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#000000"></View>
</RelativeLayout>
</LinearLayout>
</FrameLayout>
//// other set of layouts that i want to add the same iamge but in blur style
</LinearLayout>
回答3:
I used this and it's really help for me..
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/select_country_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/gray_background"
tools:context=".startupscreen.controller.SelectCountryActivity">
</RelativeLayout>
Create a background xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#636262"/>
</shape>
</item>
</selector>
Now Finally in java file
relativeLayout = findViewById(R.id.select_country_main);
relativeLayout.getBackground().setAlpha(200);
来源：https://stackoverflow.com/questions/34632728/dim-blur-a-parent-layout-background