build.gradle
在文件中添加这个
repositories {
mavenCentral()
}
dependencies {
compile 'com.edmodo:cropper:1.0.1'
}
像这样进行图像的布局
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
android:id="@+id/scrollview"
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"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="@dimen/content_padding">
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="@string/title"
android:textSize="24sp"
android:textStyle="bold"/>
<com.edmodo.cropper.CropImageView
android:id="@+id/CropImageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/content_padding"
android:adjustViewBounds="true"
android:scaleType="centerInside"
android:src="@drawable/butterfly"/>
<LinearLayout
android:id="@+id/fixedAspectRatioLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/content_padding"
android:orientation="horizontal">
<TextView
android:id="@+id/fixedAspectRatio"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:gravity="center_vertical|end"
android:text="@string/fixedAspectRatio"/>
<FrameLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1">
<ToggleButton
android:id="@+id/fixedAspectRatioToggle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|start"/>
</FrameLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/content_padding_half"
android:orientation="horizontal">
<TextView
android:id="@+id/aspectRatioXHeader"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:gravity="end"
android:text="@string/aspectRatioXHeader"/>
<TextView
android:id="@+id/aspectRatioX"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:gravity="start"
tools:text="10"/>
</LinearLayout>
<SeekBar
android:id="@+id/aspectRatioXSeek"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="100"
android:progress="10"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/content_padding_half"
android:orientation="horizontal">
<TextView
android:id="@+id/aspectRatioYHeader"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:gravity="end"
android:text="@string/aspectRatioYHeader"/>
<TextView
android:id="@+id/aspectRatioY"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:gravity="start"
tools:text="10"/>
</LinearLayout>
<SeekBar
android:id="@+id/aspectRatioYSeek"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="100"
android:progress="10"/>
<LinearLayout
android:id="@+id/showGuidelinesLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/content_padding_half"
android:orientation="horizontal">
<TextView
android:id="@+id/showGuidelines"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:gravity="end"
android:text="@string/showGuidelines"/>
<FrameLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1">
<Spinner
android:id="@+id/showGuidelinesSpin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:entries="@array/showGuidelinesArray"
android:gravity="start"/>
</FrameLayout>
</LinearLayout>
<Button
android:id="@+id/Button_crop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="@dimen/content_padding"
android:minWidth="120dp"
android:text="@string/crop"
android:textColor="#33B5E5"
android:textSize="20sp"/>
<ImageView
android:id="@+id/croppedImageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/content_padding"
android:adjustViewBounds="true"
android:contentDescription="@string/croppedImageDesc"
android:scaleType="centerInside"/>
</LinearLayout>
</ScrollView>
MainActivity.java
public class MainActivity extends Activity {
private static final int GUIDELINES_ON_TOUCH = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
// Initialize Views.
final ToggleButton fixedAspectRatioToggleButton = (ToggleButton) findViewById(R.id.fixedAspectRatioToggle);
final TextView aspectRatioXTextView = (TextView) findViewById(R.id.aspectRatioX);
final SeekBar aspectRatioXSeekBar = (SeekBar) findViewById(R.id.aspectRatioXSeek);
final TextView aspectRatioYTextView = (TextView) findViewById(R.id.aspectRatioY);
final SeekBar aspectRatioYSeekBar = (SeekBar) findViewById(R.id.aspectRatioYSeek);
final Spinner guidelinesSpinner = (Spinner) findViewById(R.id.showGuidelinesSpin);
final CropImageView cropImageView = (CropImageView) findViewById(R.id.CropImageView);
final ImageView croppedImageView = (ImageView) findViewById(R.id.croppedImageView);
final Button cropButton = (Button) findViewById(R.id.Button_crop);
// Initializes fixedAspectRatio toggle button.
fixedAspectRatioToggleButton.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
cropImageView.setFixedAspectRatio(isChecked);
cropImageView.setAspectRatio(aspectRatioXSeekBar.getProgress(), aspectRatioYSeekBar.getProgress());
aspectRatioXSeekBar.setEnabled(isChecked);
aspectRatioYSeekBar.setEnabled(isChecked);
}
});
// Set seek bars to be disabled until toggle button is checked.
aspectRatioXSeekBar.setEnabled(false);
aspectRatioYSeekBar.setEnabled(false);
aspectRatioXTextView.setText(String.valueOf(aspectRatioXSeekBar.getProgress()));
aspectRatioYTextView.setText(String.valueOf(aspectRatioXSeekBar.getProgress()));
// Initialize aspect ratio X SeekBar.
aspectRatioXSeekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar aspectRatioXSeekBar, int progress, boolean fromUser) {
if (progress < 1) {
aspectRatioXSeekBar.setProgress(1);
}
cropImageView.setAspectRatio(aspectRatioXSeekBar.getProgress(), aspectRatioYSeekBar.getProgress());
aspectRatioXTextView.setText(String.valueOf(aspectRatioXSeekBar.getProgress()));
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// Do nothing.
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// Do nothing.
}
});
// Initialize aspect ratio Y SeekBar.
aspectRatioYSeekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar aspectRatioYSeekBar, int progress, boolean fromUser) {
if (progress < 1) {
aspectRatioYSeekBar.setProgress(1);
}
cropImageView.setAspectRatio(aspectRatioXSeekBar.getProgress(), aspectRatioYSeekBar.getProgress());
aspectRatioYTextView.setText(String.valueOf(aspectRatioYSeekBar.getProgress()));
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// Do nothing.
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// Do nothing.
}
});
// Set up the Guidelines Spinner.
guidelinesSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
cropImageView.setGuidelines(i);
}
public void onNothingSelected(AdapterView<?> adapterView) {
// Do nothing.
}
});
guidelinesSpinner.setSelection(GUIDELINES_ON_TOUCH);
// Initialize the Crop button.
cropButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final Bitmap croppedImage = cropImageView.getCroppedImage();
croppedImageView.setImageBitmap(croppedImage);
}
});
}
}
有关更多详细信息,请访问:https ://github.com/edmodo/cropper