In caso di complessi ProgressBarcome questo,
usare ClipDrawable.
NOTA: non ho usato ProgressBarqui in questo esempio. Ho raggiunto questo obiettivo usando ClipDrawable tagliando l'immagine con Animation.
A Drawableche ne ritaglia un altro in Drawablebase al Drawablevalore di livello corrente di questo. Puoi controllare quanto il bambino Drawableviene troncato in larghezza e altezza in base al livello, nonché una gravità per controllare dove è collocato nel suo contenitore generale. Most often used to implement things like progress bars, aumentando il livello del disegno con setLevel().
NOTA: il disegno è completamente tagliato e non visibile quando il livello è 0 e completamente rivelato quando il livello è 10.000.
Ho usato queste due immagini per farlo CustomProgressBar.
scall.png
ballon_progress.png
MainActivity.java
public class MainActivity extends ActionBarActivity {
private EditText etPercent;
private ClipDrawable mImageDrawable;
// a field in your class
private int mLevel = 0;
private int fromLevel = 0;
private int toLevel = 0;
public static final int MAX_LEVEL = 10000;
public static final int LEVEL_DIFF = 100;
public static final int DELAY = 30;
private Handler mUpHandler = new Handler();
private Runnable animateUpImage = new Runnable() {
@Override
public void run() {
doTheUpAnimation(fromLevel, toLevel);
}
};
private Handler mDownHandler = new Handler();
private Runnable animateDownImage = new Runnable() {
@Override
public void run() {
doTheDownAnimation(fromLevel, toLevel);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
etPercent = (EditText) findViewById(R.id.etPercent);
ImageView img = (ImageView) findViewById(R.id.imageView1);
mImageDrawable = (ClipDrawable) img.getDrawable();
mImageDrawable.setLevel(0);
}
private void doTheUpAnimation(int fromLevel, int toLevel) {
mLevel += LEVEL_DIFF;
mImageDrawable.setLevel(mLevel);
if (mLevel <= toLevel) {
mUpHandler.postDelayed(animateUpImage, DELAY);
} else {
mUpHandler.removeCallbacks(animateUpImage);
MainActivity.this.fromLevel = toLevel;
}
}
private void doTheDownAnimation(int fromLevel, int toLevel) {
mLevel -= LEVEL_DIFF;
mImageDrawable.setLevel(mLevel);
if (mLevel >= toLevel) {
mDownHandler.postDelayed(animateDownImage, DELAY);
} else {
mDownHandler.removeCallbacks(animateDownImage);
MainActivity.this.fromLevel = toLevel;
}
}
public void onClickOk(View v) {
int temp_level = ((Integer.parseInt(etPercent.getText().toString())) * MAX_LEVEL) / 100;
if (toLevel == temp_level || temp_level > MAX_LEVEL) {
return;
}
toLevel = (temp_level <= MAX_LEVEL) ? temp_level : toLevel;
if (toLevel > fromLevel) {
// cancel previous process first
mDownHandler.removeCallbacks(animateDownImage);
MainActivity.this.fromLevel = toLevel;
mUpHandler.post(animateUpImage);
} else {
// cancel previous process first
mUpHandler.removeCallbacks(animateUpImage);
MainActivity.this.fromLevel = toLevel;
mDownHandler.post(animateDownImage);
}
}
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingTop="16dp"
android:paddingBottom="16dp"
android:orientation="vertical"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<EditText
android:id="@+id/etPercent"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:inputType="number"
android:maxLength="3" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ok"
android:onClick="onClickOk" />
</LinearLayout>
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
<ImageView
android:id="@+id/imageView2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/scall" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/clip_source" />
</FrameLayout>
clip_source.xml
<?xml version="1.0" encoding="utf-8"?>
<clip xmlns:android="http://schemas.android.com/apk/res/android"
android:clipOrientation="vertical"
android:drawable="@drawable/ballon_progress"
android:gravity="bottom" />
In caso di complessi HorizontalProgressBarbasta cambiare cliporientationin clip_source.xml in questo modo,
android:clipOrientation="horizontal"
Puoi scaricare la demo completa da qui .