Android 学习笔记进阶十二之裁截图片

2023-08-24 14:44:34

package xiaosi.cut;
import java.io.File;
import android.app.Activity;
import android.content.Intent;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
public class CutActivity extends Activity {
private static int SELECT_PICTURE;//返回标志位 filed
private File tempFile;
private Button button;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.main);
this.tempFile = new File("/sdcard/song/a.jpg");
button = new Button(this);
button.setText("获取图片");
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
intent.putExtra("crop", "true");// crop=true 有这句才能出来最后的裁剪页面.
intent.putExtra("aspectX", 1);// 这两项为裁剪框的比例.
intent.putExtra("aspectY", 2);// x:y=1:2
intent.putExtra("output", Uri.fromFile(tempFile));
intent.putExtra("outputFormat", "JPEG");//返回格式
startActivityForResult(Intent.createChooser(intent, "选择图片"), SELECT_PICTURE);
}
});
setContentView(button);
}
/**
* 裁剪完图片后系统调用的方法:onActivityResult
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK)
if (requestCode == SELECT_PICTURE)
button.setBackgroundDrawable(Drawable.createFromPath(tempFile.getAbsolutePath()));
}
}

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