標籤:and mes 範圍 undle etl nal ipo protect http
話不多說
實現簡單利用了這個ClipDrawable
clip.xml
<?xml version="1.0" encoding="utf-8"?><clip xmlns:android="http://schemas.android.com/apk/res/android" android:drawable="@drawable/ic" android:clipOrientation="horizontal" android:gravity="left">
activity_main.xml
<ImageView android:id="@+id/imgclip" android:layout_width="200dp" android:layout_height="200dp" android:src="@drawable/clip"/>
MainActivity.java
package mdm.study.com.myresoucestudy;import android.graphics.drawable.ClipDrawable;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.widget.ImageView;import java.util.Timer;import java.util.TimerTask;public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //徐徐展開的風景 ImageView imgClip = (ImageView) findViewById(R.id.imgclip); final ClipDrawable clipDrawable = (ClipDrawable) imgClip.getDrawable(); final Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { if(msg.what == 0x123){ //clipDrawable值的範圍0! 10000 clipDrawable.setLevel(clipDrawable.getLevel() + 50); } } }; final Timer timer = new Timer(); timer.schedule(new TimerTask() { @Override public void run() { Message msg = Message.obtain(); msg.what = 0x123; handler.sendMessage(msg); //取消定時器 if(clipDrawable.getLevel() >= 10000){ timer.cancel(); } } },0,10); }}
簡單吧。
從零開始學android -- CilpDrawable 徐徐展開的風景