实现TextView 文字排版，分散两端对齐

TextView textview=(TextView)findViewbyId(R.id.text);
textview.setText(Html.fromHtml(page.getContent()));

import android.app.Activity;
import android.database.Cursor;
import android.graphics.Point;
import android.graphics.Typeface;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Display;
import android.view.Gravity;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity {
static Point size;
static float density;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

Display display = getWindowManager().getDefaultDisplay();
size=new Point();
DisplayMetrics dm=new DisplayMetrics();
display.getMetrics(dm);
density=dm.density;
display.getSize(size);

TextView tv=(TextView)findViewById(R.id.textView1);
Typeface typeface=Typeface.createFromAsset(this.getAssets(), "Roboto-Medium.ttf");
tv.setTypeface(typeface);
tv.setLineSpacing(0f, 1.2f);
tv.setTextSize(10*MainActivity.density);

//some random long text
String myText=getResources().getString(R.string.my_text);

tv.setText(myText);
TextJustification.justify(tv,size.x);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}

import java.util.ArrayList;

import android.graphics.Paint;
import android.text.TextUtils;
import android.widget.TextView;

public class TextJustification {

public static void justify(TextView textView,float contentWidth) {
String text=textView.getText().toString();
Paint paint=textView.getPaint();

ArrayList<String> lineList=lineBreak(text,paint,contentWidth);

textView.setText(TextUtils.join(" ", lineList).replaceFirst("\\s", ""));
}

private static ArrayList<String> lineBreak(String text,Paint paint,float contentWidth){
String [] wordArray=text.split("\\s");
ArrayList<String> lineList = new ArrayList<String>();
String myText="";

for(String word:wordArray){
if(paint.measureText(myText+" "+word)<=contentWidth)
myText=myText+" "+word;
else{
int totalSpacesToInsert=(int)((contentWidth-paint.measureText(myText))/paint.measureText(" "));
lineList.add(justifyLine(myText,totalSpacesToInsert));
myText=word;
}
}
lineList.add(myText);
return lineList;
}

private static String justifyLine(String text,int totalSpacesToInsert){
String[] wordArray=text.split("\\s");
String toAppend=" ";

while((totalSpacesToInsert)>=(wordArray.length-1)){
toAppend=toAppend+" ";
totalSpacesToInsert=totalSpacesToInsert-(wordArray.length-1);
}
int i=0;
String justifiedText="";
for(String word:wordArray){
if(i<totalSpacesToInsert)
justifiedText=justifiedText+word+" "+toAppend;

else
justifiedText=justifiedText+word+toAppend;

i++;
}

return justifiedText;
}

}

<RelativeLayout 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"
>

<ScrollView
android:id="@+id/scrollView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"

>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
</LinearLayout>
</ScrollView>

</RelativeLayout>