android clipdrawable 小例子

效果如下：

进度条也是类似这样的逻辑

代码：

layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent"
              android:layout_height="fill_parent" android:orientation="vertical">

    <RelativeLayout
        android:layout_width="match_parent" android:layout_height="50dp" android:background="@color/white">

        <ImageView
            android:id="@+id/image" android:layout_width="match_parent" android:layout_height="50dp"
            android:background="@drawable/clip" />

        <TextView
            android:layout_width="match_parent" android:layout_height="50dp" android:gravity="center"
            android:text="手机存储：大小25.5M/总大小30M" />
    </RelativeLayout>

</LinearLayout>

MyActivity.java

package com.example.myapp;

import android.app.Activity;
import android.graphics.drawable.ClipDrawable;
import android.os.Bundle;
import android.widget.ImageView;

public class MyActivity extends Activity{
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ImageView image = (ImageView) findViewById(R.id.image);
        ClipDrawable d = (ClipDrawable) image.getBackground();
        d.setLevel(d.getLevel()+7000);
    }
}