android鑳屾櫙鍥剧墖鑷€傚簲澶у皬鎬庝箞瀹炵幇
瑕佸疄鐜癆ndroid鑳屾櫙鍥剧墖鐨勮嚜閫傚簲澶у皬锛屽彲浠ヤ娇鐢ㄤ互涓嬫柟娉曪細
- 浣跨敤
android:scaleType
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fitXY
锛氬浘鐗囩缉鏀惧埌View鐨勫ぇ灏忥紝鍙兘瀵艰嚧鍥剧墖鐨勬瘮渚嬪け鐪熴€?/li>fitStart
锛氭寜鐓у浘鐗囩殑鍘熷姣斾緥缂╂斁锛屽皢鍥剧墖鏀惧湪View鐨勫乏涓婅銆?/li>fitCenter
锛氭寜鐓у浘鐗囩殑鍘熷姣斾緥缂╂斁锛屽皢鍥剧墖灞呬腑鏄剧ず銆?/li>fitEnd
锛氭寜鐓у浘鐗囩殑鍘熷姣斾緥缂╂斁锛屽皢鍥剧墖鏀惧湪View鐨勫彸涓嬭銆?/li>
- 灏嗗浘鐗囪祫婧愭斁鍦ㄤ笉鍚岀殑
drawable
鏂囦欢澶逛腑锛屽苟浣跨敤涓嶅悓鐨勫垎杈ㄧ巼鍛藉悕銆侫ndroid浼氭牴鎹澶囩殑灞忓箷瀵嗗害鑷姩閫夋嫨鍚堥€傜殑鍥剧墖璧勬簮銆?/li>
渚嬪锛屾斁缃互涓嬫枃浠讹細
res/drawable-mdpi/background.png
锛氶€傜敤浜庝綆瀵嗗害灞忓箷 (mdpi) 鐨勮儗鏅浘鐗囥€?/li>res/drawable-hdpi/background.png
锛氶€傜敤浜庝腑绛夊瘑搴﹀睆骞?(hdpi) 鐨勮儗鏅浘鐗囥€?/li>res/drawable-xhdpi/background.png
锛氶€傜敤浜庨珮瀵嗗害灞忓箷 (xhdpi) 鐨勮儗鏅浘鐗囥€?/li>
Android浼氭牴鎹澶囩殑灞忓箷瀵嗗害鑷姩閫夋嫨鍚堥€傜殑鍥剧墖璧勬簮銆?/p>
- 浣跨敤
ConstraintLayout
甯冨眬鏉ュ疄鐜拌嚜閫傚簲鑳屾櫙鍥剧墖鐨勫ぇ灏忋€傝缃儗鏅浘鐗囩殑瀹藉害鍜岄珮搴︿负0dp
锛屽苟璁剧疆app:layout_constraintDimensionRatio
灞炴€ф潵鎸囧畾鍥剧墖鐨勫楂樻瘮渚嬨€?/li>
渚嬪锛?/p>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/background_image">
<ImageView
android:layout_width="0dp"
android:layout_height="0dp"
android:scaleType="centerCrop"
android:src="@drawable/background_image"
app:layout_constraintDimensionRatio="3:2"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
鍦ㄤ笂杩扮ず渚嬩腑锛?code>ConstraintLayout浣滀负鏍瑰竷灞€锛岃儗鏅浘鐗囪璁剧疆涓烘暣涓竷灞€鐨勮儗鏅€?code>ImageView浣滀负瀛愯鍥撅紝閫氳繃璁剧疆layout_width
鍜?code>layout_height涓?code>0dp锛屽苟浣跨敤layout_constraintDimensionRatio
鎸囧畾瀹介珮姣斾緥鏉ュ疄鐜拌嚜閫傚簲澶у皬銆?/p>
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