xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.android.imageview.MainActivity"
tools:ignore="MergeRootFrame" >
android:id="@+id/imageView"
android:layout_width="250dp"
android:layout_height="300dp"
android:src="@drawable/image"
android:contentDescription="@string/description"
android:scaleType="fitCenter">
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="@string/text_one"/>
android:id="@+id/seekBar1"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:max="300"
android:progress="100"
android:layout_marginTop="10dp"/>
android:id="@+id/textView2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/text_two"
android:layout_marginTop="10dp">
android:id="@+id/seekBar2"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:max="360"
android:layout_marginTop="10dp"/>
package com.android.imageview;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
import android.os.Build;
public class MainActivity extends ActionBarActivity implements OnSeekBarChangeListener{
private int minWidth = 40;
private TextView textView1,TextView2;
private ImageView imageView;
private Matrix matrix;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView)this.findViewById(R.id.imageView);
SeekBar seekBar1 = (SeekBar)this.findViewById(R.id.seekBar1);
SeekBar seekBar2 = (SeekBar)this.findViewById(R.id.seekBar2);
seekBar1.setOnSeekBarChangeListener(this);
seekBar2.setOnSeekBarChangeListener(this);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
seekBar1.setMax(dm.widthPixels-minWidth);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
if (seekBar.getId()==R.id.seekBar1){
int newWidth = progress + minWidth;
int newHeight = (int)(newWidth*6/5);
imageView.setLayoutParams(new LinearLayout.LayoutParams(newWidth, newHeight));
textView1.setText("图像宽度:"+newWidth+" 图像高度:"+newHeight);
}else if(seekBar.getId()==R.id.seekBar2){
Bitmap bitmap = ((BitmapDrawable)getResources().getDrawable(R.drawable.image)).getBitmap();
matrix.setRotate(progress);
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
imageView.setImageBitmap(bitmap);
TextView2.setText(progress+"度");
}
}